128206122792 has 32 divisors (see below), whose sum is σ = 349653062880. Its totient is φ = 38850340160.

The previous prime is 128206122763. The next prime is 128206122833. The reversal of 128206122792 is 297221602821.

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, 242814363 + ... + 242814890.

It is an arithmetic number, because the mean of its divisors is an integer number (10926658215).

Almost surely, 2^128206122792 is an apocalyptic number.

128206122792 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

128206122792 is an abundant number, since it is smaller than the sum of its proper divisors (221446940088).

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

128206122792 is a wasteful number, since it uses less digits than its factorization.

128206122792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 485629273 (or 485629269 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 42.

The spelling of 128206122792 in words is "one hundred twenty-eight billion, two hundred six million, one hundred twenty-two thousand, seven hundred ninety-two".