256917260802 has 32 divisors (see below), whose sum is σ = 514832338944. Its totient is φ = 85472946000.

The previous prime is 256917260797. The next prime is 256917260819. The reversal of 256917260802 is 208062719652.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6679927 + ... + 6718277.

It is an arithmetic number, because the mean of its divisors is an integer number (16088510592).

Almost surely, 2^256917260802 is an apocalyptic number.

256917260802 is an abundant number, since it is smaller than the sum of its proper divisors (257915078142).

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

256917260802 is a wasteful number, since it uses less digits than its factorization.

256917260802 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40494.

The product of its (nonzero) digits is 725760, while the sum is 48.

The spelling of 256917260802 in words is "two hundred fifty-six billion, nine hundred seventeen million, two hundred sixty thousand, eight hundred two".