138772662844 has 24 divisors (see below), whose sum is σ = 251575934400. Its totient is φ = 66900482880.

The previous prime is 138772662817. The next prime is 138772662857. The reversal of 138772662844 is 448266277831.

It is a Harshad number since it is a multiple of its sum of digits (58).

It is a congruent number.

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, 748527 + ... + 915334.

It is an arithmetic number, because the mean of its divisors is an integer number (10482330600).

Almost surely, 2^138772662844 is an apocalyptic number.

It is an amenable number.

138772662844 is a deficient number, since it is larger than the sum of its proper divisors (112803271556).

138772662844 is a wasteful number, since it uses less digits than its factorization.

138772662844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1664613 (or 1664611 counting only the distinct ones).

The product of its digits is 21676032, while the sum is 58.

The spelling of 138772662844 in words is "one hundred thirty-eight billion, seven hundred seventy-two million, six hundred sixty-two thousand, eight hundred forty-four".