12656331404 has 12 divisors (see below), whose sum is σ = 22152197424. Its totient is φ = 6327132144.

The previous prime is 12656331403. The next prime is 12656331439. The reversal of 12656331404 is 40413365621.

It is a super-2 number, since 2×12656331404² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12656331403) 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, 230504 + ... + 280079.

It is an arithmetic number, because the mean of its divisors is an integer number (1846016452).

Almost surely, 2^12656331404 is an apocalyptic number.

It is an amenable number.

12656331404 is a deficient number, since it is larger than the sum of its proper divisors (9495866020).

12656331404 is a wasteful number, since it uses less digits than its factorization.

12656331404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 516784 (or 516782 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 35.

The spelling of 12656331404 in words is "twelve billion, six hundred fifty-six million, three hundred thirty-one thousand, four hundred four".