256516364424 has 16 divisors (see below), whose sum is σ = 641290911120. Its totient is φ = 85505454800.

The previous prime is 256516364393. The next prime is 256516364441. The reversal of 256516364424 is 424463615652.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5344090902 + ... + 5344090949.

It is an arithmetic number, because the mean of its divisors is an integer number (40080681945).

Almost surely, 2^256516364424 is an apocalyptic number.

256516364424 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

256516364424 is an abundant number, since it is smaller than the sum of its proper divisors (384774546696).

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

256516364424 is a wasteful number, since it uses less digits than its factorization.

256516364424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10688181860 (or 10688181856 counting only the distinct ones).

The product of its digits is 4147200, while the sum is 48.

The spelling of 256516364424 in words is "two hundred fifty-six billion, five hundred sixteen million, three hundred sixty-four thousand, four hundred twenty-four".