138717123084 has 36 divisors (see below), whose sum is σ = 351705445000. Its totient is φ = 46099342080.

The previous prime is 138717123067. The next prime is 138717123089. The reversal of 138717123084 is 480321717831.

138717123084 is a `hidden beast` number, since 1 + 387 + 171 + 23 + 0 + 84 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (138717123089) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5808709 + ... + 5832540.

Almost surely, 2^138717123084 is an apocalyptic number.

It is an amenable number.

138717123084 is an abundant number, since it is smaller than the sum of its proper divisors (212988321916).

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

138717123084 is a wasteful number, since it uses less digits than its factorization.

138717123084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11641590 (or 11641585 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 45.

The spelling of 138717123084 in words is "one hundred thirty-eight billion, seven hundred seventeen million, one hundred twenty-three thousand, eighty-four".