256526040646774 has 16 divisors (see below), whose sum is σ = 386348433357168. Its totient is φ = 127743390093312.

The previous prime is 256526040646727. The next prime is 256526040646787. The reversal of 256526040646774 is 477646040625652.

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, 36942624 + ... + 43333699.

It is an arithmetic number, because the mean of its divisors is an integer number (24146777084823).

Almost surely, 2^{256526040646774} is an apocalyptic number.

256526040646774 is a deficient number, since it is larger than the sum of its proper divisors (129822392710394).

256526040646774 is a wasteful number, since it uses less digits than its factorization.

256526040646774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80282799.

The product of its (nonzero) digits is 406425600, while the sum is 64.

The spelling of 256526040646774 in words is "two hundred fifty-six trillion, five hundred twenty-six billion, forty million, six hundred forty-six thousand, seven hundred seventy-four".