256940901675 has 36 divisors (see below), whose sum is σ = 464954173320. Its totient is φ = 135622402560.

The previous prime is 256940901653. The next prime is 256940901727. The reversal of 256940901675 is 576109049652.

256940901675 is a `hidden beast` number, since 2 + 569 + 4 + 0 + 9 + 0 + 1 + 6 + 75 = 666.

It is not a de Polignac number, because 256940901675 - 2²⁴ = 256924124459 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 5864565 + ... + 5908214.

Almost surely, 2^256940901675 is an apocalyptic number.

256940901675 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

256940901675 is a deficient number, since it is larger than the sum of its proper divisors (208013271645).

256940901675 is a wasteful number, since it uses less digits than its factorization.

256940901675 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11772892 (or 11772884 counting only the distinct ones).

The product of its (nonzero) digits is 4082400, while the sum is 54.

The spelling of 256940901675 in words is "two hundred fifty-six billion, nine hundred forty million, nine hundred one thousand, six hundred seventy-five".