138125689365 has 16 divisors (see below), whose sum is σ = 230609847168. Its totient is φ = 70464119616.

The previous prime is 138125689327. The next prime is 138125689381. The reversal of 138125689365 is 563986521831.

It is not a de Polignac number, because 138125689365 - 2⁹ = 138125688853 is a prime.

It is a congruent number.

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, 200181814 + ... + 200182503.

It is an arithmetic number, because the mean of its divisors is an integer number (14413115448).

Almost surely, 2^138125689365 is an apocalyptic number.

138125689365 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

138125689365 is a deficient number, since it is larger than the sum of its proper divisors (92484157803).

138125689365 is a wasteful number, since it uses less digits than its factorization.

138125689365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400364348.

The product of its digits is 9331200, while the sum is 57.

The spelling of 138125689365 in words is "one hundred thirty-eight billion, one hundred twenty-five million, six hundred eighty-nine thousand, three hundred sixty-five".