138038955624 has 32 divisors (see below), whose sum is σ = 383441544000. Its totient is φ = 46012985136.

The previous prime is 138038955577. The next prime is 138038955671. The reversal of 138038955624 is 426559830831.

138038955624 is a `hidden beast` number, since 1 + 3 + 8 + 0 + 3 + 8 + 9 + 5 + 5 + 624 = 666.

It is an interprime number because it is at equal distance from previous prime (138038955577) and next prime (138038955671).

It is a Harshad number since it is a multiple of its sum of digits (54).

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, 319534404 + ... + 319534835.

It is an arithmetic number, because the mean of its divisors is an integer number (11982548250).

Almost surely, 2^138038955624 is an apocalyptic number.

It is an amenable number.

138038955624 is an abundant number, since it is smaller than the sum of its proper divisors (245402588376).

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

138038955624 is a wasteful number, since it uses less digits than its factorization.

138038955624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 639069254 (or 639069244 counting only the distinct ones).

The product of its (nonzero) digits is 6220800, while the sum is 54.

The spelling of 138038955624 in words is "one hundred thirty-eight billion, thirty-eight million, nine hundred fifty-five thousand, six hundred twenty-four".