Coachella production sources tell TMZ organizers just tallied everyone who attended ... and it more than surpassed expectations. We're told over 50k were there ... with an A-list guest list that included the entire Kardashian family, Chance The Rapper, Donald Glover, Lizzo, Kid Cudi, DMX and more.

Kanye's Sunday Service started right around 9 AM on a massive man-made mountain in the Coachella campground and lasted for a couple of hours.

Not only did Kanye and his choir perform numerous Gospel songs, he also debuted a new track called "Water" and played classics like "Jesus Walks."

The event -- a culmination of Sunday Service performances from the past several weeks -- stole the show this weekend ... and reviews have been insanely positive.

In a touching moment at the end of the show, Kanye was seen hugging Marcus Hyde, the family's former photographer who nearly lost his life in a horrible car accident last year, as well as his mother.