256116634044 has 48 divisors (see below), whose sum is σ = 625438963968. Its totient is φ = 81418030848.

The previous prime is 256116634019. The next prime is 256116634051. The reversal of 256116634044 is 440436611652.

It is a junction number, because it is equal to n+sod(n) for n = 256116633987 and 256116634005.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1283782 + ... + 1469805.

It is an arithmetic number, because the mean of its divisors is an integer number (13029978416).

Almost surely, 2^256116634044 is an apocalyptic number.

It is an amenable number.

256116634044 is an abundant number, since it is smaller than the sum of its proper divisors (369322329924).

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

256116634044 is a wasteful number, since it uses less digits than its factorization.

256116634044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2753954 (or 2753952 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 42.

The spelling of 256116634044 in words is "two hundred fifty-six billion, one hundred sixteen million, six hundred thirty-four thousand, forty-four".