256937159268 has 48 divisors (see below), whose sum is σ = 666327480000. Its totient is φ = 85620763584.

The previous prime is 256937159263. The next prime is 256937159279. The reversal of 256937159268 is 862951739652.

256937159268 is a `hidden beast` number, since 2 + 5 + 6 + 9 + 37 + 1 + 592 + 6 + 8 = 666.

It is not an unprimeable number, because it can be changed into a prime (256937159263) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27603 + ... + 717381.

It is an arithmetic number, because the mean of its divisors is an integer number (13881822500).

Almost surely, 2^256937159268 is an apocalyptic number.

It is an amenable number.

256937159268 is an abundant number, since it is smaller than the sum of its proper divisors (409390320732).

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

256937159268 is a wasteful number, since it uses less digits than its factorization.

256937159268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 693241 (or 693233 counting only the distinct ones).

The product of its digits is 48988800, while the sum is 63.

The spelling of 256937159268 in words is "two hundred fifty-six billion, nine hundred thirty-seven million, one hundred fifty-nine thousand, two hundred sixty-eight".