128812982256 has 60 divisors (see below), whose sum is σ = 411997081392. Its totient is φ = 36803708928.

The previous prime is 128812982237. The next prime is 128812982269. The reversal of 128812982256 is 652289218821.

128812982256 is a `hidden beast` number, since 1 + 28 + 81 + 298 + 2 + 256 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 63894321 + ... + 63896336.

Almost surely, 2^128812982256 is an apocalyptic number.

128812982256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

128812982256 is an abundant number, since it is smaller than the sum of its proper divisors (283184099136).

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

128812982256 is a wasteful number, since it uses less digits than its factorization.

128812982256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127790678 (or 127790669 counting only the distinct ones).

The product of its digits is 2211840, while the sum is 54.

The spelling of 128812982256 in words is "one hundred twenty-eight billion, eight hundred twelve million, nine hundred eighty-two thousand, two hundred fifty-six".