12686192689 has 9 divisors (see below), whose sum is σ = 12782998809. Its totient is φ = 12590116740.

The previous prime is 12686192681. The next prime is 12686192711. The reversal of 12686192689 is 98629168621.

The square root of 12686192689 is 112633.

It is a perfect power (a square), and thus also a powerful number.

12686192689 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12686192689 - 2³ = 12686192681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12686192681) by changing a digit.

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 8 ways as a sum of consecutive naturals, for example, 18358834 + ... + 18359524.

It is an arithmetic number, because the mean of its divisors is an integer number (1420333201).

Almost surely, 2^12686192689 is an apocalyptic number.

12686192689 is the 112633-rd square number.

12686192689 is the 56317-th centered octagonal number.

It is an amenable number.

12686192689 is a deficient number, since it is larger than the sum of its proper divisors (96806120).

12686192689 is an frugal number, since it uses more digits than its factorization.

12686192689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1708 (or 854 counting only the distinct ones).

The product of its digits is 4478976, while the sum is 58.

The spelling of 12686192689 in words is "twelve billion, six hundred eighty-six million, one hundred ninety-two thousand, six hundred eighty-nine".