138937677913 has 16 divisors (see below), whose sum is σ = 144516960000. Its totient is φ = 133493738560.

The previous prime is 138937677899. The next prime is 138937677917. The reversal of 138937677913 is 319776739831.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-138937677913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138937677917) 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, 436788 + ... + 684586.

It is an arithmetic number, because the mean of its divisors is an integer number (9032310000).

Almost surely, 2^138937677913 is an apocalyptic number.

It is an amenable number.

138937677913 is a deficient number, since it is larger than the sum of its proper divisors (5579282087).

138937677913 is a wasteful number, since it uses less digits than its factorization.

138937677913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248072.

The product of its digits is 36006768, while the sum is 64.

The spelling of 138937677913 in words is "one hundred thirty-eight billion, nine hundred thirty-seven million, six hundred seventy-seven thousand, nine hundred thirteen".