256110664556 has 6 divisors (see below), whose sum is σ = 448193662980. Its totient is φ = 128055332276.

The previous prime is 256110664541. The next prime is 256110664577. The reversal of 256110664556 is 655466011652.

It is a self number, because there is not a number n which added to its sum of digits gives 256110664556.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32013833066 + ... + 32013833073.

It is an arithmetic number, because the mean of its divisors is an integer number (74698943830).

Almost surely, 2^256110664556 is an apocalyptic number.

It is an amenable number.

256110664556 is a deficient number, since it is larger than the sum of its proper divisors (192082998424).

256110664556 is a wasteful number, since it uses less digits than its factorization.

256110664556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64027666143 (or 64027666141 counting only the distinct ones).

The product of its (nonzero) digits is 1296000, while the sum is 47.

The spelling of 256110664556 in words is "two hundred fifty-six billion, one hundred ten million, six hundred sixty-four thousand, five hundred fifty-six".