253156124478 has 64 divisors (see below), whose sum is σ = 544240747008. Its totient is φ = 78217251840.

The previous prime is 253156124467. The next prime is 253156124491. The reversal of 253156124478 is 874421651352.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6767101 + ... + 6804407.

It is an arithmetic number, because the mean of its divisors is an integer number (8503761672).

Almost surely, 2^253156124478 is an apocalyptic number.

253156124478 is an abundant number, since it is smaller than the sum of its proper divisors (291084622530).

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

253156124478 is a wasteful number, since it uses less digits than its factorization.

253156124478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38337.

The product of its digits is 1612800, while the sum is 48.

The spelling of 253156124478 in words is "two hundred fifty-three billion, one hundred fifty-six million, one hundred twenty-four thousand, four hundred seventy-eight".