12509344608 has 24 divisors (see below), whose sum is σ = 32837029848. Its totient is φ = 4169781504.

The previous prime is 12509344607. The next prime is 12509344609. The reversal of 12509344608 is 80644390521.

It is an interprime number because it is at equal distance from previous prime (12509344607) and next prime (12509344609).

It is a tau number, because it is divible by the number of its divisors (24).

It is a self number, because there is not a number n which added to its sum of digits gives 12509344608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12509344607) 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, 65152741 + ... + 65152932.

It is an arithmetic number, because the mean of its divisors is an integer number (1368209577).

Almost surely, 2^12509344608 is an apocalyptic number.

It is an amenable number.

12509344608 is an abundant number, since it is smaller than the sum of its proper divisors (20327685240).

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

12509344608 is a wasteful number, since it uses less digits than its factorization.

12509344608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130305686 (or 130305678 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 42.

The spelling of 12509344608 in words is "twelve billion, five hundred nine million, three hundred forty-four thousand, six hundred eight".