The larger amounts of money are counted in M for millions, then B for Billions, then T for trillions then 1,000's of T. You should go 1 more level, Q for Quadrillions, then use the 1,000's after that
Skill ability "Power multiplies for every basic ball you have." It works but I have no way of knowing what the current power multiplier is. Please make the hover over show the correct/current information considering the various skills selected.