12806636404 has 12 divisors (see below), whose sum is σ = 22416424128. Its totient is φ = 6401943800.

The previous prime is 12806636387. The next prime is 12806636411. The reversal of 12806636404 is 40463660821.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 322492 + ... + 360019.

It is an arithmetic number, because the mean of its divisors is an integer number (1868035344).

Almost surely, 2^12806636404 is an apocalyptic number.

It is an amenable number.

12806636404 is a deficient number, since it is larger than the sum of its proper divisors (9609787724).

12806636404 is a wasteful number, since it uses less digits than its factorization.

12806636404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 687206 (or 687204 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 40.

The spelling of 12806636404 in words is "twelve billion, eight hundred six million, six hundred thirty-six thousand, four hundred four".