12722697808 has 20 divisors (see below), whose sum is σ = 24666147828. Its totient is φ = 6357240320.

The previous prime is 12722697791. The next prime is 12722697857. The reversal of 12722697808 is 80879622721.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 6837966864 + 5884730944 = 82692^2 + 76712^2 .

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, 231163 + ... + 280858.

Almost surely, 2^12722697808 is an apocalyptic number.

It is an amenable number.

12722697808 is a deficient number, since it is larger than the sum of its proper divisors (11943450020).

12722697808 is a wasteful number, since it uses less digits than its factorization.

12722697808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 513582 (or 513576 counting only the distinct ones).

The product of its (nonzero) digits is 1354752, while the sum is 52.

The spelling of 12722697808 in words is "twelve billion, seven hundred twenty-two million, six hundred ninety-seven thousand, eight hundred eight".