12642118116 has 36 divisors (see below), whose sum is σ = 30317113008. Its totient is φ = 4100141088.

The previous prime is 12642118109. The next prime is 12642118117. The reversal of 12642118116 is 61181124621.

It is not an unprimeable number, because it can be changed into a prime (12642118117) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 368346 + ... + 401201.

It is an arithmetic number, because the mean of its divisors is an integer number (842142028).

Almost surely, 2^12642118116 is an apocalyptic number.

It is an amenable number.

12642118116 is an abundant number, since it is smaller than the sum of its proper divisors (17674994892).

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

12642118116 is a wasteful number, since it uses less digits than its factorization.

12642118116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 769628 (or 769589 counting only the distinct ones).

The product of its digits is 4608, while the sum is 33.

The spelling of 12642118116 in words is "twelve billion, six hundred forty-two million, one hundred eighteen thousand, one hundred sixteen".