Largest integer which will work in this flash application (scratch)

https://scratch.mit.edu/projects/26664091/#fullscreen

I was playing monopoly and I used the above flash application. Now I'm curious what will be the largest integer which will fit in the 'player 2 money' field? I tried to input 6009000 manually using a macro, but I could keep running that macro for days without getting any real answer. Any ideas will be greatly appreciated.