256622376137424 has 40 divisors (see below), whose sum is σ = 723208514570592. Its totient is φ = 77764356405120.

The previous prime is 256622376137389. The next prime is 256622376137431. The reversal of 256622376137424 is 424731673226652.

It is a congruent number.

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, 243013613239 + ... + 243013614294.

Almost surely, 2^{256622376137424} is an apocalyptic number.

256622376137424 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

256622376137424 is an abundant number, since it is smaller than the sum of its proper divisors (466586138433168).

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

256622376137424 is a wasteful number, since it uses less digits than its factorization.

256622376137424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 486027227555 (or 486027227549 counting only the distinct ones).

The product of its digits is 121927680, while the sum is 60.

The spelling of 256622376137424 in words is "two hundred fifty-six trillion, six hundred twenty-two billion, three hundred seventy-six million, one hundred thirty-seven thousand, four hundred twenty-four".