252651873690 has 48 divisors (see below), whose sum is σ = 656990470656. Its totient is φ = 67364028000.

The previous prime is 252651873641. The next prime is 252651873709. The reversal of 252651873690 is 96378156252.

252651873690 is a `hidden beast` number, since 2 + 5 + 2 + 6 + 518 + 7 + 36 + 90 = 666.

It is a super-2 number, since 2×252651873690² (a number of 24 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 428415 + ... + 829965.

It is an arithmetic number, because the mean of its divisors is an integer number (13687301472).

Almost surely, 2^252651873690 is an apocalyptic number.

252651873690 is an abundant number, since it is smaller than the sum of its proper divisors (404338596966).

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

252651873690 is a wasteful number, since it uses less digits than its factorization.

252651873690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 408555 (or 408552 counting only the distinct ones).

The product of its (nonzero) digits is 5443200, while the sum is 54.

The spelling of 252651873690 in words is "two hundred fifty-two billion, six hundred fifty-one million, eight hundred seventy-three thousand, six hundred ninety".