The total number of machines and the earnings should follow the same numerical abbreviation as the other numbers in the game, but the ascend multiplier doesn't really matter as it is unlikely that it will ever get to such a high number that it will need to be abbreviated.
The game would be much easier and less in need of an auto clicker if it were possible to buy more than one of an item at a time.
But a fun little game which fed my daily desire for stupidly big numbers :)