128791045572 has 24 divisors (see below), whose sum is σ = 343442788416. Its totient is φ = 36797441568.

The previous prime is 128791045519. The next prime is 128791045609. The reversal of 128791045572 is 275540197821.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 766613283 + ... + 766613450.

It is an arithmetic number, because the mean of its divisors is an integer number (14310116184).

Almost surely, 2^128791045572 is an apocalyptic number.

128791045572 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

128791045572 is an abundant number, since it is smaller than the sum of its proper divisors (214651742844).

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

128791045572 is a wasteful number, since it uses less digits than its factorization.

128791045572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1533226747 (or 1533226745 counting only the distinct ones).

The product of its (nonzero) digits is 1411200, while the sum is 51.

The spelling of 128791045572 in words is "one hundred twenty-eight billion, seven hundred ninety-one million, forty-five thousand, five hundred seventy-two".