12309511732 has 12 divisors (see below), whose sum is σ = 24619023520. Its totient is φ = 5275505016.

The previous prime is 12309511729. The next prime is 12309511733. The reversal of 12309511732 is 23711590321.

12309511732 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12309511733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 219812682 + ... + 219812737.

Almost surely, 2^12309511732 is an apocalyptic number.

It is an amenable number.

12309511732 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

12309511732 is a wasteful number, since it uses less digits than its factorization.

12309511732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 439625430 (or 439625428 counting only the distinct ones).

The product of its (nonzero) digits is 11340, while the sum is 34.

The spelling of 12309511732 in words is "twelve billion, three hundred nine million, five hundred eleven thousand, seven hundred thirty-two".