138934329639 has 16 divisors (see below), whose sum is σ = 218538792960. Its totient is φ = 76830043680.

The previous prime is 138934329617. The next prime is 138934329647. The reversal of 138934329639 is 936923439831.

It is not a de Polignac number, because 138934329639 - 2⁵ = 138934329607 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138934329139) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 106707744 + ... + 106709045.

It is an arithmetic number, because the mean of its divisors is an integer number (13658674560).

Almost surely, 2^138934329639 is an apocalyptic number.

138934329639 is a deficient number, since it is larger than the sum of its proper divisors (79604463321).

138934329639 is a wasteful number, since it uses less digits than its factorization.

138934329639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213416830.

The product of its digits is 22674816, while the sum is 60.

The spelling of 138934329639 in words is "one hundred thirty-eight billion, nine hundred thirty-four million, three hundred twenty-nine thousand, six hundred thirty-nine".