256140057776 has 20 divisors (see below), whose sum is σ = 501184942944. Its totient is φ = 126802008000.

The previous prime is 256140057751. The next prime is 256140057799. The reversal of 256140057776 is 677750041652.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79249640 + ... + 79252871.

Almost surely, 2^256140057776 is an apocalyptic number.

It is an amenable number.

256140057776 is a deficient number, since it is larger than the sum of its proper divisors (245044885168).

256140057776 is a wasteful number, since it uses less digits than its factorization.

256140057776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158502620 (or 158502614 counting only the distinct ones).

The product of its (nonzero) digits is 2469600, while the sum is 50.

The spelling of 256140057776 in words is "two hundred fifty-six billion, one hundred forty million, fifty-seven thousand, seven hundred seventy-six".