138637525115 has 8 divisors (see below), whose sum is σ = 166367588688. Its totient is φ = 110908314400.

The previous prime is 138637525097. The next prime is 138637525151. The reversal of 138637525115 is 511525736831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 138637525115 - 2⁶ = 138637525051 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 138637525115.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 227069 + ... + 573441.

It is an arithmetic number, because the mean of its divisors is an integer number (20795948586).

Almost surely, 2^138637525115 is an apocalyptic number.

138637525115 is a deficient number, since it is larger than the sum of its proper divisors (27730063573).

138637525115 is an equidigital number, since it uses as much as digits as its factorization.

138637525115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 426429.

The product of its digits is 756000, while the sum is 47.

The spelling of 138637525115 in words is "one hundred thirty-eight billion, six hundred thirty-seven million, five hundred twenty-five thousand, one hundred fifteen".