12538857194166 has 16 divisors (see below), whose sum is σ = 25203733056000. Its totient is φ = 4158615953448.

The previous prime is 12538857194153. The next prime is 12538857194173. The reversal of 12538857194166 is 66149175883521.

It is a junction number, because it is equal to n+sod(n) for n = 12538857194097 and 12538857194106.

It is a congruent number.

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, 5250776526 + ... + 5250778913.

It is an arithmetic number, because the mean of its divisors is an integer number (1575233316000).

Almost surely, 2^{12538857194166} is an apocalyptic number.

12538857194166 is an abundant number, since it is smaller than the sum of its proper divisors (12664875861834).

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

12538857194166 is a wasteful number, since it uses less digits than its factorization.

12538857194166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10501555643.

The product of its digits is 87091200, while the sum is 66.

The spelling of 12538857194166 in words is "twelve trillion, five hundred thirty-eight billion, eight hundred fifty-seven million, one hundred ninety-four thousand, one hundred sixty-six".