256106569632 has 24 divisors (see below), whose sum is σ = 672279745536. Its totient is φ = 85368856512.

The previous prime is 256106569583. The next prime is 256106569709. The reversal of 256106569632 is 236965601652.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (24).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1333888288 + ... + 1333888479.

It is an arithmetic number, because the mean of its divisors is an integer number (28011656064).

Almost surely, 2^256106569632 is an apocalyptic number.

It is an amenable number.

256106569632 is an abundant number, since it is smaller than the sum of its proper divisors (416173175904).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

256106569632 is a wasteful number, since it uses less digits than its factorization.

256106569632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2667776780 (or 2667776772 counting only the distinct ones).

The product of its (nonzero) digits is 3499200, while the sum is 51.

The spelling of 256106569632 in words is "two hundred fifty-six billion, one hundred six million, five hundred sixty-nine thousand, six hundred thirty-two".