138781172876 has 12 divisors (see below), whose sum is σ = 243276613272. Its totient is φ = 69273569088.

The previous prime is 138781172843. The next prime is 138781172927. The reversal of 138781172876 is 678271187831.

It is a happy number.

138781172876 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×138781172876² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29251670 + ... + 29256413.

It is an arithmetic number, because the mean of its divisors is an integer number (20273051106).

Almost surely, 2^138781172876 is an apocalyptic number.

It is an amenable number.

138781172876 is a deficient number, since it is larger than the sum of its proper divisors (104495440396).

138781172876 is a wasteful number, since it uses less digits than its factorization.

138781172876 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58508680 (or 58508678 counting only the distinct ones).

The product of its digits is 6322176, while the sum is 59.

The spelling of 138781172876 in words is "one hundred thirty-eight billion, seven hundred eighty-one million, one hundred seventy-two thousand, eight hundred seventy-six".