138992113368 has 48 divisors (see below), whose sum is σ = 378691120080. Its totient is φ = 46053271104.

The previous prime is 138992113361. The next prime is 138992113397. The reversal of 138992113368 is 863311299831.

138992113368 is a `hidden beast` number, since 1 + 3 + 8 + 99 + 211 + 336 + 8 = 666.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138992113361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5767755 + ... + 5791802.

It is an arithmetic number, because the mean of its divisors is an integer number (7889398335).

Almost surely, 2^138992113368 is an apocalyptic number.

138992113368 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

138992113368 is an abundant number, since it is smaller than the sum of its proper divisors (239699006712).

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

138992113368 is a wasteful number, since it uses less digits than its factorization.

138992113368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11559736 (or 11559729 counting only the distinct ones).

The product of its digits is 1679616, while the sum is 54.

The spelling of 138992113368 in words is "one hundred thirty-eight billion, nine hundred ninety-two million, one hundred thirteen thousand, three hundred sixty-eight".