256080944964 has 96 divisors (see below), whose sum is σ = 666253987840. Its totient is φ = 76021545600.

The previous prime is 256080944957. The next prime is 256080944993. The reversal of 256080944964 is 469449080652.

It is a super-2 number, since 2×256080944964² (a number of 24 digits) contains 22 as substring.

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 31 ways as a sum of consecutive naturals, for example, 1520727 + ... + 1680705.

Almost surely, 2^256080944964 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 256080944964, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (333126993920).

256080944964 is an abundant number, since it is smaller than the sum of its proper divisors (410173042876).

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

256080944964 is a wasteful number, since it uses less digits than its factorization.

256080944964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160361 (or 160359 counting only the distinct ones).

The product of its (nonzero) digits is 14929920, while the sum is 57.

The spelling of 256080944964 in words is "two hundred fifty-six billion, eighty million, nine hundred forty-four thousand, nine hundred sixty-four".