138927238168 has 32 divisors (see below), whose sum is σ = 265211366400. Its totient is φ = 68206943008.

The previous prime is 138927238159. The next prime is 138927238189. The reversal of 138927238168 is 861832729831.

It is a happy number.

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, 236805 + ... + 577867.

It is an arithmetic number, because the mean of its divisors is an integer number (8287855200).

Almost surely, 2^138927238168 is an apocalyptic number.

It is an amenable number.

138927238168 is a deficient number, since it is larger than the sum of its proper divisors (126284128232).

138927238168 is a wasteful number, since it uses less digits than its factorization.

138927238168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 341991 (or 341987 counting only the distinct ones).

The product of its digits is 6967296, while the sum is 58.

The spelling of 138927238168 in words is "one hundred thirty-eight billion, nine hundred twenty-seven million, two hundred thirty-eight thousand, one hundred sixty-eight".