253215465656 has 16 divisors (see below), whose sum is σ = 495421563600. Its totient is φ = 121103048704.

The previous prime is 253215465619. The next prime is 253215465709. The reversal of 253215465656 is 656564512352.

253215465656 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 688085321 + ... + 688085688.

It is an arithmetic number, because the mean of its divisors is an integer number (30963847725).

Almost surely, 2^253215465656 is an apocalyptic number.

It is an amenable number.

253215465656 is a deficient number, since it is larger than the sum of its proper divisors (242206097944).

253215465656 is a wasteful number, since it uses less digits than its factorization.

253215465656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1376171038 (or 1376171034 counting only the distinct ones).

The product of its digits is 6480000, while the sum is 50.

The spelling of 253215465656 in words is "two hundred fifty-three billion, two hundred fifteen million, four hundred sixty-five thousand, six hundred fifty-six".