256622327564272 has 20 divisors (see below), whose sum is σ = 497206040204320. Its totient is φ = 128311091382528.

The previous prime is 256622327564237. The next prime is 256622327564357. The reversal of 256622327564272 is 272465723226652.

256622327564272 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 256622327564272.

It is a congruent number.

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, 35383129 + ... + 42014407.

It is an arithmetic number, because the mean of its divisors is an integer number (24860302010216).

Almost surely, 2^{256622327564272} is an apocalyptic number.

It is an amenable number.

256622327564272 is a deficient number, since it is larger than the sum of its proper divisors (240583712640048).

256622327564272 is a wasteful number, since it uses less digits than its factorization.

256622327564272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9049960 (or 9049954 counting only the distinct ones).

The product of its digits is 203212800, while the sum is 61.

The spelling of 256622327564272 in words is "two hundred fifty-six trillion, six hundred twenty-two billion, three hundred twenty-seven million, five hundred sixty-four thousand, two hundred seventy-two".