256377566562 has 32 divisors (see below), whose sum is σ = 552338402112. Its totient is φ = 78865324224.

The previous prime is 256377566561. The next prime is 256377566579. The reversal of 256377566562 is 265665773652.

It is a junction number, because it is equal to n+sod(n) for n = 256377566496 and 256377566505.

It is not an unprimeable number, because it can be changed into a prime (256377566561) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 108513 + ... + 724244.

It is an arithmetic number, because the mean of its divisors is an integer number (17260575066).

Almost surely, 2^256377566562 is an apocalyptic number.

256377566562 is an abundant number, since it is smaller than the sum of its proper divisors (295960835550).

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

256377566562 is a wasteful number, since it uses less digits than its factorization.

256377566562 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 836722.

The product of its digits is 95256000, while the sum is 60.

The spelling of 256377566562 in words is "two hundred fifty-six billion, three hundred seventy-seven million, five hundred sixty-six thousand, five hundred sixty-two".