138379708842 has 32 divisors (see below), whose sum is σ = 286584177600. Its totient is φ = 44492235648.

The previous prime is 138379708799. The next prime is 138379708867. The reversal of 138379708842 is 248807973831.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 212923 + ... + 567534.

It is an arithmetic number, because the mean of its divisors is an integer number (8955755550).

Almost surely, 2^138379708842 is an apocalyptic number.

138379708842 is an abundant number, since it is smaller than the sum of its proper divisors (148204468758).

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

138379708842 is a wasteful number, since it uses less digits than its factorization.

138379708842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 781510.

The product of its (nonzero) digits is 16257024, while the sum is 60.

The spelling of 138379708842 in words is "one hundred thirty-eight billion, three hundred seventy-nine million, seven hundred eight thousand, eight hundred forty-two".