138860975330 has 64 divisors (see below), whose sum is σ = 325174652928. Its totient is φ = 41399540160.

The previous prime is 138860975299. The next prime is 138860975347. The reversal of 138860975330 is 33579068831.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3902702 + ... + 3938121.

It is an arithmetic number, because the mean of its divisors is an integer number (5080853952).

Almost surely, 2^138860975330 is an apocalyptic number.

138860975330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

138860975330 is an abundant number, since it is smaller than the sum of its proper divisors (186313677598).

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

138860975330 is a wasteful number, since it uses less digits than its factorization.

138860975330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7840871.

The product of its (nonzero) digits is 3265920, while the sum is 53.

The spelling of 138860975330 in words is "one hundred thirty-eight billion, eight hundred sixty million, nine hundred seventy-five thousand, three hundred thirty".