138879522774 has 24 divisors (see below), whose sum is σ = 301591084080. Its totient is φ = 46187720208.

The previous prime is 138879522763. The next prime is 138879522779. The reversal of 138879522774 is 477225978831.

138879522774 is a `hidden beast` number, since 1 + 38 + 8 + 7 + 9 + 522 + 7 + 74 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138879522779) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8779717 + ... + 8795520.

It is an arithmetic number, because the mean of its divisors is an integer number (12566295170).

Almost surely, 2^138879522774 is an apocalyptic number.

138879522774 is an abundant number, since it is smaller than the sum of its proper divisors (162711561306).

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

138879522774 is a wasteful number, since it uses less digits than its factorization.

138879522774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17575684 (or 17575681 counting only the distinct ones).

The product of its digits is 47416320, while the sum is 63.

The spelling of 138879522774 in words is "one hundred thirty-eight billion, eight hundred seventy-nine million, five hundred twenty-two thousand, seven hundred seventy-four".