252155223161564 has 24 divisors (see below), whose sum is σ = 445482563097600. Its totient is φ = 124878590068736.

The previous prime is 252155223161549. The next prime is 252155223161587. The reversal of 252155223161564 is 465161322551252.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 512156252 + ... + 512648355.

It is an arithmetic number, because the mean of its divisors is an integer number (18561773462400).

Almost surely, 2^{252155223161564} is an apocalyptic number.

It is an amenable number.

252155223161564 is a deficient number, since it is larger than the sum of its proper divisors (193327339936036).

252155223161564 is a wasteful number, since it uses less digits than its factorization.

252155223161564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1024805197 (or 1024805195 counting only the distinct ones).

The product of its digits is 4320000, while the sum is 50.

The spelling of 252155223161564 in words is "two hundred fifty-two trillion, one hundred fifty-five billion, two hundred twenty-three million, one hundred sixty-one thousand, five hundred sixty-four".