138787765415 has 16 divisors (see below), whose sum is σ = 179397656928. Its totient is φ = 102465906816.

The previous prime is 138787765381. The next prime is 138787765429. The reversal of 138787765415 is 514567787831.

It is not a de Polignac number, because 138787765415 - 2¹² = 138787761319 is a prime.

It is a Duffinian number.

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, 43004 + ... + 528606.

It is an arithmetic number, because the mean of its divisors is an integer number (11212353558).

Almost surely, 2^138787765415 is an apocalyptic number.

138787765415 is a deficient number, since it is larger than the sum of its proper divisors (40609891513).

138787765415 is a wasteful number, since it uses less digits than its factorization.

138787765415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 490018.

The product of its digits is 39513600, while the sum is 62.

The spelling of 138787765415 in words is "one hundred thirty-eight billion, seven hundred eighty-seven million, seven hundred sixty-five thousand, four hundred fifteen".