12645805908 has 48 divisors (see below), whose sum is σ = 31170565440. Its totient is φ = 3979180800.

The previous prime is 12645805903. The next prime is 12645805937. The reversal of 12645805908 is 80950854621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12645805903) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34623 + ... + 162758.

It is an arithmetic number, because the mean of its divisors is an integer number (649386780).

Almost surely, 2^12645805908 is an apocalyptic number.

It is an amenable number.

12645805908 is an abundant number, since it is smaller than the sum of its proper divisors (18524759532).

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

12645805908 is a wasteful number, since it uses less digits than its factorization.

12645805908 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197688 (or 197686 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 48.

The spelling of 12645805908 in words is "twelve billion, six hundred forty-five million, eight hundred five thousand, nine hundred eight".