I only use the Nightclub Warehouse + Safe, Arcade safe and Bunker.

Mostly from Casino Heists and passive business income. I thought I was doing quite well 36 million with Career Earnings of 136 million. Is it even possible to even spend that much money on in-game items even if you bought every single vehicle, gun & upgraded business at full price for two new characters? Logically there's got to be some kind of hard limit on the maximum values that players can hold. It's quite funny to see that he's actually hit the limit on what the integer can hold in memory (or at least the limit of what the page can show)