7138123640615 has 16 divisors (see below), whose sum is σ = 9344584745856. Its totient is φ = 5191289325600.

The previous prime is 7138123640597. The next prime is 7138123640621. The reversal of 7138123640615 is 5160463218317.

It is not a de Polignac number, because 7138123640615 - 2³⁰ = 7137049898791 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 7138123640615.

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, 3177764 + ... + 4937046.

It is an arithmetic number, because the mean of its divisors is an integer number (584036546616).

Almost surely, 2^{7138123640615} is an apocalyptic number.

7138123640615 is a deficient number, since it is larger than the sum of its proper divisors (2206461105241).

7138123640615 is a wasteful number, since it uses less digits than its factorization.

7138123640615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1833070.

The product of its (nonzero) digits is 725760, while the sum is 47.

The spelling of 7138123640615 in words is "seven trillion, one hundred thirty-eight billion, one hundred twenty-three million, six hundred forty thousand, six hundred fifteen".