12908185615 has 16 divisors (see below), whose sum is σ = 16684264800. Its totient is φ = 9530531712.

The previous prime is 12908185547. The next prime is 12908185627. The reversal of 12908185615 is 51658180921.

It is a happy number.

It is not a de Polignac number, because 12908185615 - 2²⁵ = 12874631183 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 455481 + ... + 482989.

It is an arithmetic number, because the mean of its divisors is an integer number (1042766550).

Almost surely, 2^12908185615 is an apocalyptic number.

12908185615 is a deficient number, since it is larger than the sum of its proper divisors (3776079185).

12908185615 is a wasteful number, since it uses less digits than its factorization.

12908185615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34746.

The product of its (nonzero) digits is 172800, while the sum is 46.

The spelling of 12908185615 in words is "twelve billion, nine hundred eight million, one hundred eighty-five thousand, six hundred fifteen".