128920229196 has 48 divisors (see below), whose sum is σ = 332782587648. Its totient is φ = 38516497600.

The previous prime is 128920229177. The next prime is 128920229209. The reversal of 128920229196 is 691922029821.

128920229196 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6868575 + ... + 6887318.

It is an arithmetic number, because the mean of its divisors is an integer number (6932970576).

Almost surely, 2^128920229196 is an apocalyptic number.

It is an amenable number.

128920229196 is an abundant number, since it is smaller than the sum of its proper divisors (203862358452).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

128920229196 is a wasteful number, since it uses less digits than its factorization.

128920229196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13755982 (or 13755980 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 51.

The spelling of 128920229196 in words is "one hundred twenty-eight billion, nine hundred twenty million, two hundred twenty-nine thousand, one hundred ninety-six".