138657525759 has 8 divisors (see below), whose sum is σ = 205418556720. Its totient is φ = 92438350488.

The previous prime is 138657525751. The next prime is 138657525763. The reversal of 138657525759 is 957525756831.

138657525759 is a `hidden beast` number, since 1 + 3 + 8 + 6 + 5 + 7 + 52 + 575 + 9 = 666.

It is not a de Polignac number, because 138657525759 - 2³ = 138657525751 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 138657525696 and 138657525705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138657525751) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2567731932 + ... + 2567731985.

It is an arithmetic number, because the mean of its divisors is an integer number (25677319590).

Almost surely, 2^138657525759 is an apocalyptic number.

138657525759 is a deficient number, since it is larger than the sum of its proper divisors (66761030961).

138657525759 is an equidigital number, since it uses as much as digits as its factorization.

138657525759 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5135463926 (or 5135463920 counting only the distinct ones).

The product of its digits is 79380000, while the sum is 63.

The spelling of 138657525759 in words is "one hundred thirty-eight billion, six hundred fifty-seven million, five hundred twenty-five thousand, seven hundred fifty-nine".