12806738185 has 16 divisors (see below), whose sum is σ = 15509200896. Its totient is φ = 10151704768.

The previous prime is 12806738159. The next prime is 12806738237. The reversal of 12806738185 is 58183760821.

It is a cyclic number.

It is not a de Polignac number, because 12806738185 - 2¹⁷ = 12806607113 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 240504 + ... + 288886.

It is an arithmetic number, because the mean of its divisors is an integer number (969325056).

Almost surely, 2^12806738185 is an apocalyptic number.

It is an amenable number.

12806738185 is a deficient number, since it is larger than the sum of its proper divisors (2702462711).

12806738185 is a wasteful number, since it uses less digits than its factorization.

12806738185 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48872.

The product of its (nonzero) digits is 645120, while the sum is 49.

The spelling of 12806738185 in words is "twelve billion, eight hundred six million, seven hundred thirty-eight thousand, one hundred eighty-five".