138693463724 has 12 divisors (see below), whose sum is σ = 242716176864. Its totient is φ = 69345984624.

The previous prime is 138693463709. The next prime is 138693463747. The reversal of 138693463724 is 427364396831.

It is a self number, because there is not a number n which added to its sum of digits gives 138693463724.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 586394 + ... + 788190.

It is an arithmetic number, because the mean of its divisors is an integer number (20226348072).

Almost surely, 2^138693463724 is an apocalyptic number.

It is an amenable number.

138693463724 is a deficient number, since it is larger than the sum of its proper divisors (104022713140).

138693463724 is a wasteful number, since it uses less digits than its factorization.

138693463724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 373624 (or 373622 counting only the distinct ones).

The product of its digits is 15676416, while the sum is 56.

The spelling of 138693463724 in words is "one hundred thirty-eight billion, six hundred ninety-three million, four hundred sixty-three thousand, seven hundred twenty-four".