12566689008 has 40 divisors (see below), whose sum is σ = 32479790208. Its totient is φ = 4186852032.

The previous prime is 12566689007. The next prime is 12566689013. The reversal of 12566689008 is 80098666521.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12566689007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37141 + ... + 162827.

Almost surely, 2^12566689008 is an apocalyptic number.

It is an amenable number.

12566689008 is an abundant number, since it is smaller than the sum of its proper divisors (19913101200).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12566689008 is a wasteful number, since it uses less digits than its factorization.

12566689008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127781 (or 127775 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 51.

The spelling of 12566689008 in words is "twelve billion, five hundred sixty-six million, six hundred eighty-nine thousand, eight".