12307308616 has 8 divisors (see below), whose sum is σ = 23076203670. Its totient is φ = 6153654304.

The previous prime is 12307308589. The next prime is 12307308623. The reversal of 12307308616 is 61680370321.

It can be written as a sum of positive squares in only one way, i.e., 6265355716 + 6041952900 = 79154^2 + 77730^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 769206781 + ... + 769206796.

Almost surely, 2^12307308616 is an apocalyptic number.

It is an amenable number.

12307308616 is a deficient number, since it is larger than the sum of its proper divisors (10768895054).

12307308616 is a wasteful number, since it uses less digits than its factorization.

12307308616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1538413583 (or 1538413579 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 37.

Adding to 12307308616 its reverse (61680370321), we get a palindrome (73987678937).

The spelling of 12307308616 in words is "twelve billion, three hundred seven million, three hundred eight thousand, six hundred sixteen".