The soul musician died peacefully in his sleep, according to his family.
The Grammy winner wrote a No. 1 song, learned how to arrange from Henry Mancini and worked with Frank Sinatra, Sarah Vaughan, Bing Crosby, Jo Stafford and Red Skelton.
The content creator collaborated with 50 Cent, David Guetta and more during his lifetime.
"Jannis was a gentle, kind soul, always appreciative of our team helping him to share his art with the world," the musician's label shared in a statement.
As Entravision chairman and chief executive, Ulloa oversaw a network of 47 radio stations and 55 TV stations.
The musician also recorded three solo albums after leaving the post-punk/new wave act in the early '80s.
He teamed with Andy, Bob and Dick to perform in the movies and with Bing Crosby and Kay Thompson.
"He joins our brothers Maurice, Monte and Ronald in heaven," his brother and bandmate Verdine White wrote.
"Rest in heaven," Drizzy captioned a photo of the former Three 6 Mafia member.
Three 6 Mafia's DJ Paul and Juicy J shared tributes on social media.
