138766836923 has 24 divisors (see below), whose sum is σ = 165769018800. Its totient is φ = 115379225280.

The previous prime is 138766836917. The next prime is 138766836931. The reversal of 138766836923 is 329638667831.

138766836923 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 138766836923 - 2⁴ = 138766836907 is a prime.

It is a super-2 number, since 2×138766836923² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (138766836953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 233213 + ... + 576126.

It is an arithmetic number, because the mean of its divisors is an integer number (6907042450).

Almost surely, 2^138766836923 is an apocalyptic number.

138766836923 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

138766836923 is a deficient number, since it is larger than the sum of its proper divisors (27002181877).

138766836923 is a wasteful number, since it uses less digits than its factorization.

138766836923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 809483 (or 809472 counting only the distinct ones).

The product of its digits is 47029248, while the sum is 62.

The spelling of 138766836923 in words is "one hundred thirty-eight billion, seven hundred sixty-six million, eight hundred thirty-six thousand, nine hundred twenty-three".