138188553568 has 48 divisors (see below), whose sum is σ = 293085460080. Its totient is φ = 63757748736.

The previous prime is 138188553557. The next prime is 138188553617. The reversal of 138188553568 is 865355881831.

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, 1208703 + ... + 1318081.

It is an arithmetic number, because the mean of its divisors is an integer number (6105947085).

Almost surely, 2^138188553568 is an apocalyptic number.

It is an amenable number.

138188553568 is an abundant number, since it is smaller than the sum of its proper divisors (154896906512).

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

138188553568 is a wasteful number, since it uses less digits than its factorization.

138188553568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112439 (or 112431 counting only the distinct ones).

The product of its digits is 27648000, while the sum is 61.

The spelling of 138188553568 in words is "one hundred thirty-eight billion, one hundred eighty-eight million, five hundred fifty-three thousand, five hundred sixty-eight".