138636766076 has 12 divisors (see below), whose sum is σ = 242903517360. Its totient is φ = 69235761120.

The previous prime is 138636766061. The next prime is 138636766171. The reversal of 138636766076 is 670667636831.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20651705 + ... + 20658416.

It is an arithmetic number, because the mean of its divisors is an integer number (20241959780).

Almost surely, 2^138636766076 is an apocalyptic number.

It is an amenable number.

138636766076 is a deficient number, since it is larger than the sum of its proper divisors (104266751284).

138636766076 is a wasteful number, since it uses less digits than its factorization.

138636766076 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41310964 (or 41310962 counting only the distinct ones).

The product of its (nonzero) digits is 27433728, while the sum is 59.

The spelling of 138636766076 in words is "one hundred thirty-eight billion, six hundred thirty-six million, seven hundred sixty-six thousand, seventy-six".