138186712328 has 32 divisors (see below), whose sum is σ = 296127370560. Its totient is φ = 59220279360.

The previous prime is 138186712303. The next prime is 138186712343. The reversal of 138186712328 is 823217681831.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1790783 + ... + 1866353.

It is an arithmetic number, because the mean of its divisors is an integer number (9253980330).

Almost surely, 2^138186712328 is an apocalyptic number.

It is an amenable number.

138186712328 is an abundant number, since it is smaller than the sum of its proper divisors (157940658232).

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

138186712328 is a wasteful number, since it uses less digits than its factorization.

138186712328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108237 (or 108233 counting only the distinct ones).

The product of its digits is 774144, while the sum is 50.

The spelling of 138186712328 in words is "one hundred thirty-eight billion, one hundred eighty-six million, seven hundred twelve thousand, three hundred twenty-eight".