138186606615 has 32 divisors (see below), whose sum is σ = 222808587456. Its totient is φ = 73131310080.

The previous prime is 138186606581. The next prime is 138186606619. The reversal of 138186606615 is 516606681831.

It is not a de Polignac number, because 138186606615 - 2¹⁰ = 138186605591 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138186606619) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1185069 + ... + 1296441.

It is an arithmetic number, because the mean of its divisors is an integer number (6962768358).

Almost surely, 2^138186606615 is an apocalyptic number.

138186606615 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

138186606615 is a deficient number, since it is larger than the sum of its proper divisors (84621980841).

138186606615 is a wasteful number, since it uses less digits than its factorization.

138186606615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112019.

The product of its (nonzero) digits is 1244160, while the sum is 51.

The spelling of 138186606615 in words is "one hundred thirty-eight billion, one hundred eighty-six million, six hundred six thousand, six hundred fifteen".