256056140416 has 32 divisors (see below), whose sum is σ = 510405285780. Its totient is φ = 127954421760.

The previous prime is 256056140401. The next prime is 256056140441. The reversal of 256056140416 is 614041650652.

It can be written as a sum of positive squares in 2 ways, for example, as 141297802816 + 114758337600 = 375896^2 + 338760^2 .

It is a tau number, because it is divible by the number of its divisors (32).

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, 351661 + ... + 797356.

Almost surely, 2^256056140416 is an apocalyptic number.

It is an amenable number.

256056140416 is a deficient number, since it is larger than the sum of its proper divisors (254349145364).

256056140416 is a wasteful number, since it uses less digits than its factorization.

256056140416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1150772 (or 1150760 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 40.

The spelling of 256056140416 in words is "two hundred fifty-six billion, fifty-six million, one hundred forty thousand, four hundred sixteen".