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(Integer.MAX_VALUE)! is so INCOMPREHENDINGLY huge that we probably won't ever need the number of trailing zeroes lmao
If anyone ever does, PLEASE contact me so I can see why
negative factorials don't have a value, mathematically or computationally as far as I know, becaues of the definition
n! = n*((n-1)!), where 0! = 1
this is also the reason for some other funky mathematical phenomona, but this is a CS site so
point is, this function will never be used for values where n is an element of (-∞,0)