256588511812930 has 96 divisors (see below), whose sum is σ = 542358549996480. Its totient is φ = 87074812598400.

The previous prime is 256588511812891. The next prime is 256588511812939. The reversal of 256588511812930 is 39218115885652.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (256588511812939) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 81749781 + ... + 84830440.

It is an arithmetic number, because the mean of its divisors is an integer number (5649568229130).

Almost surely, 2^{256588511812930} is an apocalyptic number.

256588511812930 is an abundant number, since it is smaller than the sum of its proper divisors (285770038183550).

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

256588511812930 is a wasteful number, since it uses less digits than its factorization.

256588511812930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166580336 (or 166580325 counting only the distinct ones).

The product of its (nonzero) digits is 41472000, while the sum is 64.

The spelling of 256588511812930 in words is "two hundred fifty-six trillion, five hundred eighty-eight billion, five hundred eleven million, eight hundred twelve thousand, nine hundred thirty".