256534112460 has 24 divisors (see below), whose sum is σ = 718295515056. Its totient is φ = 68409096640.

The previous prime is 256534112459. The next prime is 256534112479. The reversal of 256534112460 is 64211435652.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2137784211 + ... + 2137784330.

It is an arithmetic number, because the mean of its divisors is an integer number (29928979794).

Almost surely, 2^256534112460 is an apocalyptic number.

256534112460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

256534112460 is an abundant number, since it is smaller than the sum of its proper divisors (461761402596).

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

256534112460 is a wasteful number, since it uses less digits than its factorization.

256534112460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4275568553 (or 4275568551 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 39.

The spelling of 256534112460 in words is "two hundred fifty-six billion, five hundred thirty-four million, one hundred twelve thousand, four hundred sixty".