Hi Pepzi Cola and Welcome to the Forums! There is no problem with that whatsoever. Our very own
@FilthyGorilla has made it quite a point to overrun that number a few times as I think he's tried to make a Billion g (yes 10 times more than those 9 digits) in a year.
The display glitches a bit with some of the numbers running out of the bounding box and I think the game has the 2.1 Billion bug (16-bit number limit) so you may want to keep your earnings below 2 Billion.
I mean if you
can.
If you're so prolific at g generation that 2B is just a terrible confinement then you maybe could post some of your strategies in the Guides and Resources sections!