12688620404 has 12 divisors (see below), whose sum is σ = 23170524384. Its totient is φ = 6068470584.

The previous prime is 12688620397. The next prime is 12688620407. The reversal of 12688620404 is 40402688621.

It is a super-2 number, since 2×12688620404² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12688620407) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68959802 + ... + 68959985.

It is an arithmetic number, because the mean of its divisors is an integer number (1930877032).

Almost surely, 2^12688620404 is an apocalyptic number.

It is an amenable number.

12688620404 is a deficient number, since it is larger than the sum of its proper divisors (10481903980).

12688620404 is a wasteful number, since it uses less digits than its factorization.

12688620404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137919814 (or 137919812 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 41.

The spelling of 12688620404 in words is "twelve billion, six hundred eighty-eight million, six hundred twenty thousand, four hundred four".