138097340178 has 64 divisors (see below), whose sum is σ = 336815984640. Its totient is φ = 36867664512.

The previous prime is 138097340141. The next prime is 138097340191. The reversal of 138097340178 is 871043790831.

It is a self number, because there is not a number n which added to its sum of digits gives 138097340178.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 1127050 + ... + 1243557.

It is an arithmetic number, because the mean of its divisors is an integer number (5262749760).

Almost surely, 2^138097340178 is an apocalyptic number.

138097340178 is an abundant number, since it is smaller than the sum of its proper divisors (198718644462).

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

138097340178 is a wasteful number, since it uses less digits than its factorization.

138097340178 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2370711.

The product of its (nonzero) digits is 1016064, while the sum is 51.

The spelling of 138097340178 in words is "one hundred thirty-eight billion, ninety-seven million, three hundred forty thousand, one hundred seventy-eight".