138926885772 has 36 divisors (see below), whose sum is σ = 335726232296. Its totient is φ = 44712097920.

The previous prime is 138926885759. The next prime is 138926885807. The reversal of 138926885772 is 277588629831.

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 11 ways as a sum of consecutive naturals, for example, 6872929 + ... + 6893112.

Almost surely, 2^138926885772 is an apocalyptic number.

138926885772 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

138926885772 is an abundant number, since it is smaller than the sum of its proper divisors (196799346524).

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

138926885772 is a wasteful number, since it uses less digits than its factorization.

138926885772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13766106 (or 13766075 counting only the distinct ones).

The product of its digits is 81285120, while the sum is 66.

The spelling of 138926885772 in words is "one hundred thirty-eight billion, nine hundred twenty-six million, eight hundred eighty-five thousand, seven hundred seventy-two".