256755776652 has 36 divisors (see below), whose sum is σ = 649756645720. Its totient is φ = 85488322752.

The previous prime is 256755776621. The next prime is 256755776699. The reversal of 256755776652 is 256677557652.

256755776652 is a `hidden beast` number, since 2 + 5 + 6 + 7 + 5 + 577 + 6 + 6 + 52 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 256755776652.

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, 4006777 + ... + 4070352.

Almost surely, 2^256755776652 is an apocalyptic number.

It is an amenable number.

256755776652 is an abundant number, since it is smaller than the sum of its proper divisors (393000869068).

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

256755776652 is a wasteful number, since it uses less digits than its factorization.

256755776652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8078022 (or 8078017 counting only the distinct ones).

The product of its digits is 185220000, while the sum is 63.

The spelling of 256755776652 in words is "two hundred fifty-six billion, seven hundred fifty-five million, seven hundred seventy-six thousand, six hundred fifty-two".