138848686133466 has 16 divisors (see below), whose sum is σ = 277739569181088. Its totient is φ = 46275862558800.

The previous prime is 138848686133459. The next prime is 138848686133483. The reversal of 138848686133466 is 664331686848831.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1758161980 + ... + 1758240951.

It is an arithmetic number, because the mean of its divisors is an integer number (17358723073818).

Almost surely, 2^{138848686133466} is an apocalyptic number.

138848686133466 is an abundant number, since it is smaller than the sum of its proper divisors (138890883047622).

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

138848686133466 is a wasteful number, since it uses less digits than its factorization.

138848686133466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3516409517.

The product of its digits is 2293235712, while the sum is 75.

The spelling of 138848686133466 in words is "one hundred thirty-eight trillion, eight hundred forty-eight billion, six hundred eighty-six million, one hundred thirty-three thousand, four hundred sixty-six".