256611477204470 has 32 divisors (see below), whose sum is σ = 470722171977792. Its totient is φ = 100685130429312.

The previous prime is 256611477204469. The next prime is 256611477204497. The reversal of 256611477204470 is 74402774116652.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52389317 + ... + 57077696.

It is an arithmetic number, because the mean of its divisors is an integer number (14710067874306).

Almost surely, 2^{256611477204470} is an apocalyptic number.

256611477204470 is a deficient number, since it is larger than the sum of its proper divisors (214110694773322).

256611477204470 is a wasteful number, since it uses less digits than its factorization.

256611477204470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109471496.

The product of its (nonzero) digits is 15805440, while the sum is 56.

The spelling of 256611477204470 in words is "two hundred fifty-six trillion, six hundred eleven billion, four hundred seventy-seven million, two hundred four thousand, four hundred seventy".