138918017676 has 48 divisors (see below), whose sum is σ = 338563298304. Its totient is φ = 44249732736.

The previous prime is 138918017671. The next prime is 138918017677. The reversal of 138918017676 is 676710819831.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (138918017671) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41485 + ... + 528731.

It is an arithmetic number, because the mean of its divisors is an integer number (7053402048).

Almost surely, 2^138918017676 is an apocalyptic number.

It is an amenable number.

138918017676 is an abundant number, since it is smaller than the sum of its proper divisors (199645280628).

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

138918017676 is a wasteful number, since it uses less digits than its factorization.

138918017676 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 488310 (or 488308 counting only the distinct ones).

The product of its (nonzero) digits is 3048192, while the sum is 57.

The spelling of 138918017676 in words is "one hundred thirty-eight billion, nine hundred eighteen million, seventeen thousand, six hundred seventy-six".