253402351320 has 64 divisors (see below), whose sum is σ = 774550602720. Its totient is φ = 66298978304.

The previous prime is 253402351297. The next prime is 253402351331. The reversal of 253402351320 is 23153204352.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 19915209 + ... + 19927928.

Almost surely, 2^253402351320 is an apocalyptic number.

253402351320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

253402351320 is an abundant number, since it is smaller than the sum of its proper divisors (521148251400).

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

253402351320 is a wasteful number, since it uses less digits than its factorization.

253402351320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39843204 (or 39843200 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 30.

Adding to 253402351320 its reverse (23153204352), we get a palindrome (276555555672).

The spelling of 253402351320 in words is "two hundred fifty-three billion, four hundred two million, three hundred fifty-one thousand, three hundred twenty".