12664599108 has 24 divisors (see below), whose sum is σ = 33772264512. Its totient is φ = 3618456864.

The previous prime is 12664599091. The next prime is 12664599109. The reversal of 12664599108 is 80199546621.

It is not an unprimeable number, because it can be changed into a prime (12664599109) 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, 75384435 + ... + 75384602.

It is an arithmetic number, because the mean of its divisors is an integer number (1407177688).

Almost surely, 2^12664599108 is an apocalyptic number.

It is an amenable number.

12664599108 is an abundant number, since it is smaller than the sum of its proper divisors (21107665404).

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

12664599108 is a wasteful number, since it uses less digits than its factorization.

12664599108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150769051 (or 150769049 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 51.

The spelling of 12664599108 in words is "twelve billion, six hundred sixty-four million, five hundred ninety-nine thousand, one hundred eight".