138775126524 has 24 divisors (see below), whose sum is σ = 324556466640. Its totient is φ = 46151541504.

The previous prime is 138775126499. The next prime is 138775126547. The reversal of 138775126524 is 425621577831.

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, 13348839 + ... + 13359230.

It is an arithmetic number, because the mean of its divisors is an integer number (13523186110).

Almost surely, 2^138775126524 is an apocalyptic number.

It is an amenable number.

138775126524 is an abundant number, since it is smaller than the sum of its proper divisors (185781340116).

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

138775126524 is a wasteful number, since it uses less digits than its factorization.

138775126524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26708509 (or 26708507 counting only the distinct ones).

The product of its digits is 2822400, while the sum is 51.

The spelling of 138775126524 in words is "one hundred thirty-eight billion, seven hundred seventy-five million, one hundred twenty-six thousand, five hundred twenty-four".