That number is ludicrous. Never trust mafiawiki!

I always see big numbers being thrown out with Fat Tony. Exaggerations aside, he must have been very rich. Vincent Cafaro said he was giving Salerno approximately a million a year from the numbers in Harlem and he'd been involved in that for decades. And that's just one racket!

http://www.nytimes.com/1973/05/18/archiv...s-leg.html?_r=0
According to this article, Salerno was caught on wiretap saying he had $80-million in loans outstanding (580 that they have written is a typo. In the print version it says 80). That has to be wrong. That's 438-million in today's money.