253129556398 has 32 divisors (see below), whose sum is σ = 387849788352. Its totient is φ = 123859008000.

The previous prime is 253129556377. The next prime is 253129556411. The reversal of 253129556398 is 893655921352.

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, 101129215 + ... + 101131717.

It is an arithmetic number, because the mean of its divisors is an integer number (12120305886).

Almost surely, 2^253129556398 is an apocalyptic number.

253129556398 is a deficient number, since it is larger than the sum of its proper divisors (134720231954).

253129556398 is a wasteful number, since it uses less digits than its factorization.

253129556398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4620.

The product of its digits is 17496000, while the sum is 58.

The spelling of 253129556398 in words is "two hundred fifty-three billion, one hundred twenty-nine million, five hundred fifty-six thousand, three hundred ninety-eight".