52407371638 has 24 divisors (see below), whose sum is σ = 79168966632. Its totient is φ = 26018893824.

The previous prime is 52407371603. The next prime is 52407371651. The reversal of 52407371638 is 83617370425.

It is a happy number.

It is a super-3 number, since 3×52407371638³ (a number of 33 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 81504145 + ... + 81504787.

It is an arithmetic number, because the mean of its divisors is an integer number (3298706943).

Almost surely, 2^52407371638 is an apocalyptic number.

52407371638 is a deficient number, since it is larger than the sum of its proper divisors (26761594994).

52407371638 is an equidigital number, since it uses as much as digits as its factorization.

52407371638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1776 (or 1519 counting only the distinct ones).

The product of its (nonzero) digits is 846720, while the sum is 46.

The spelling of 52407371638 in words is "fifty-two billion, four hundred seven million, three hundred seventy-one thousand, six hundred thirty-eight".