138392448774 has 36 divisors (see below), whose sum is σ = 286713065964. Its totient is φ = 44531593568.

The previous prime is 138392448707. The next prime is 138392448841. The reversal of 138392448774 is 477844293831.

It is an interprime number because it is at equal distance from previous prime (138392448707) and next prime (138392448841).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 26423284 + ... + 26428520.

Almost surely, 2^138392448774 is an apocalyptic number.

138392448774 is an abundant number, since it is smaller than the sum of its proper divisors (148320617190).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

138392448774 is an frugal number, since it uses more digits than its factorization.

138392448774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10537 (or 5271 counting only the distinct ones).

The product of its digits is 32514048, while the sum is 60.

The spelling of 138392448774 in words is "one hundred thirty-eight billion, three hundred ninety-two million, four hundred forty-eight thousand, seven hundred seventy-four".