256757696036 has 24 divisors (see below), whose sum is σ = 451997071680. Its totient is φ = 127615918752.

The previous prime is 256757696033. The next prime is 256757696059. The reversal of 256757696036 is 630696757652.

It is a happy number.

It is a super-2 number, since 2×256757696036² (a number of 24 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (62) 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 256757696036.

It is not an unprimeable number, because it can be changed into a prime (256757696033) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4752785 + ... + 4806503.

It is an arithmetic number, because the mean of its divisors is an integer number (18833211320).

Almost surely, 2^256757696036 is an apocalyptic number.

It is an amenable number.

256757696036 is a deficient number, since it is larger than the sum of its proper divisors (195239375644).

256757696036 is a wasteful number, since it uses less digits than its factorization.

256757696036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60803 (or 60801 counting only the distinct ones).

The product of its (nonzero) digits is 85730400, while the sum is 62.

The spelling of 256757696036 in words is "two hundred fifty-six billion, seven hundred fifty-seven million, six hundred ninety-six thousand, thirty-six".