12686433468621 has 64 divisors (see below), whose sum is σ = 19249806090240. Its totient is φ = 7363456277760.

The previous prime is 12686433468601. The next prime is 12686433468637.

12686433468621 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 12686433468621 - 2⁵ = 12686433468589 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12686433468601) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 104406820 + ... + 104528258.

It is an arithmetic number, because the mean of its divisors is an integer number (300778220160).

Almost surely, 2^{12686433468621} is an apocalyptic number.

12686433468621 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12686433468621 is a deficient number, since it is larger than the sum of its proper divisors (6563372621619).

12686433468621 is a wasteful number, since it uses less digits than its factorization.

12686433468621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122834.

The product of its digits is 47775744, while the sum is 60.

The spelling of 12686433468621 in words is "twelve trillion, six hundred eighty-six billion, four hundred thirty-three million, four hundred sixty-eight thousand, six hundred twenty-one".