38355518538 has 24 divisors (see below), whose sum is σ = 87477499200. Its totient is φ = 12112268904.

The previous prime is 38355518477. The next prime is 38355518563. The reversal of 38355518538 is 83581555383.

It is a happy number.

38355518538 is a `hidden beast` number, since 3 + 8 + 3 + 5 + 551 + 85 + 3 + 8 = 666.

It is a super-2 number, since 2×38355518538² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 56074978 + ... + 56075661.

It is an arithmetic number, because the mean of its divisors is an integer number (3644895800).

Almost surely, 2^38355518538 is an apocalyptic number.

38355518538 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

38355518538 is an abundant number, since it is smaller than the sum of its proper divisors (49121980662).

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

38355518538 is a wasteful number, since it uses less digits than its factorization.

38355518538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112150666 (or 112150663 counting only the distinct ones).

The product of its digits is 8640000, while the sum is 54.

The spelling of 38355518538 in words is "thirty-eight billion, three hundred fifty-five million, five hundred eighteen thousand, five hundred thirty-eight".