252366774623172 has 288 divisors, whose sum is σ = 721499030313600. Its totient is φ = 76227712450560.

The previous prime is 252366774623147. The next prime is 252366774623189. The reversal of 252366774623172 is 271326477663252.

It is a happy number.

252366774623172 is a `hidden beast` number, since 2 + 5 + 2 + 3 + 6 + 6 + 77 + 462 + 31 + 72 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 5255755708 + ... + 5255803724.

Almost surely, 2^{252366774623172} is an apocalyptic number.

252366774623172 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 252366774623172, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (360749515156800).

252366774623172 is an abundant number, since it is smaller than the sum of its proper divisors (469132255690428).

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

252366774623172 is a wasteful number, since it uses less digits than its factorization.

252366774623172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49344 (or 49325 counting only the distinct ones).

The product of its digits is 213373440, while the sum is 63.

The spelling of 252366774623172 in words is "two hundred fifty-two trillion, three hundred sixty-six billion, seven hundred seventy-four million, six hundred twenty-three thousand, one hundred seventy-two".