638372456162 has 32 divisors (see below), whose sum is σ = 1125203544192. Its totient is φ = 265892264064.

The previous prime is 638372456153. The next prime is 638372456207. The reversal of 638372456162 is 261654273836.

638372456162 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×638372456162² (a number of 24 digits) contains 22 as substring.

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, 240443 + ... + 1155230.

It is an arithmetic number, because the mean of its divisors is an integer number (35162610756).

Almost surely, 2^638372456162 is an apocalyptic number.

638372456162 is a deficient number, since it is larger than the sum of its proper divisors (486831088030).

638372456162 is a wasteful number, since it uses less digits than its factorization.

638372456162 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1396602.

The product of its digits is 8709120, while the sum is 53.

The spelling of 638372456162 in words is "six hundred thirty-eight billion, three hundred seventy-two million, four hundred fifty-six thousand, one hundred sixty-two".