12866812413 has 64 divisors (see below), whose sum is σ = 21670236672. Its totient is φ = 6608977920.

The previous prime is 12866812379. The next prime is 12866812429. The reversal of 12866812413 is 31421866821.

It is a happy number.

It is not a de Polignac number, because 12866812413 - 2⁸ = 12866812157 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12866812433) 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, 11158845 + ... + 11159997.

It is an arithmetic number, because the mean of its divisors is an integer number (338597448).

Almost surely, 2^12866812413 is an apocalyptic number.

12866812413 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

12866812413 is a deficient number, since it is larger than the sum of its proper divisors (8803424259).

12866812413 is a wasteful number, since it uses less digits than its factorization.

12866812413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2214.

The product of its digits is 110592, while the sum is 42.

The spelling of 12866812413 in words is "twelve billion, eight hundred sixty-six million, eight hundred twelve thousand, four hundred thirteen".