252640036160 has 28 divisors (see below), whose sum is σ = 601599086868. Its totient is φ = 101056014336.

The previous prime is 252640036147. The next prime is 252640036189. The reversal of 252640036160 is 61630046252.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 140313173056 + 112326863104 = 374584^2 + 335152^2 .

It is a super-2 number, since 2×252640036160² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 252640036160.

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, 394749737 + ... + 394750376.

Almost surely, 2^252640036160 is an apocalyptic number.

252640036160 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

252640036160 is an abundant number, since it is smaller than the sum of its proper divisors (348959050708).

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

252640036160 is an equidigital number, since it uses as much as digits as its factorization.

252640036160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 789500130 (or 789500120 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 35.

The spelling of 252640036160 in words is "two hundred fifty-two billion, six hundred forty million, thirty-six thousand, one hundred sixty".