"totally popular" is correct and usable in written English.
It can be used to describe something or someone that is extremely well-liked or widely known. Example: "The new iPhone model was totally popular among tech enthusiasts, selling out within hours of its release."
Middle-class pressures by no means totally reshaped popular urban leisure habits.
But also of the way women from Enid Blyton and Richmal Crompton – incomparably our best prose stylist and paradoxically the writer who defined boyhood – to JK Rowling, Jacqueline Wilson and Stephenie Meyer, have totally dominated popular narrative culture.
Eight months after the historic, totally unanticipated popular uprisings by pro-democracy movements in the Arab world, the process of democratization in Egypt faces formidable challenges.
But where class divisions are unbridgeable, elite literature is liable to be totally separated from popular culture.
Well, Instagram is a highly popular, totally free photo-sharing application which millions of smart-phone users are hopelessly addicted to.
President Trump threatened to send Saipov, now a permanent U.S. resident, to the extraterritorial prison at Guantánamo Bay and to totally eliminate the popular diversity-visa program, through which Saipov gained entry to the United States.
"We were totally involved with popular culture, especially through the lens of America's fixation with the automobile," recalled Mr. Lord, 59, who, along with Mr. Michels (deceased) had founded the group the previous year.
A computer may grind out district lines which can totally frustrate the popular will... The legislature must do more than satisfy one man, one vote; it must create a structure which will in fact as well as theory be responsive to the sentiments of the community..
This academic re-assessment of George II, however, has not totally eliminated the popular perception of him as a "faintly ludicrous king".
