256623463600 has 60 divisors (see below), whose sum is σ = 704614717744. Its totient is φ = 87985186560.

The previous prime is 256623463561. The next prime is 256623463601. The reversal of 256623463600 is 6364326652.

It is not an unprimeable number, because it can be changed into a prime (256623463601) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 45822819 + ... + 45828418.

Almost surely, 2^256623463600 is an apocalyptic number.

256623463600 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

256623463600 is an abundant number, since it is smaller than the sum of its proper divisors (447991254144).

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

256623463600 is a wasteful number, since it uses less digits than its factorization.

256623463600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91651262 (or 91651251 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 43.

The spelling of 256623463600 in words is "two hundred fifty-six billion, six hundred twenty-three million, four hundred sixty-three thousand, six hundred".