12308507812 has 12 divisors (see below), whose sum is σ = 21664397916. Its totient is φ = 6118679840.

The previous prime is 12308507767. The next prime is 12308507873. The reversal of 12308507812 is 21870580321.

It can be written as a sum of positive squares in 2 ways, for example, as 7727113216 + 4581394596 = 87904^2 + 67686^2 .

It is a super-3 number, since 3×12308507812³ (a number of 31 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8892739 + ... + 8894122.

It is an arithmetic number, because the mean of its divisors is an integer number (1805366493).

Almost surely, 2^12308507812 is an apocalyptic number.

It is an amenable number.

12308507812 is a deficient number, since it is larger than the sum of its proper divisors (9355890104).

12308507812 is a wasteful number, since it uses less digits than its factorization.

12308507812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17787038 (or 17787036 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 37.

The spelling of 12308507812 in words is "twelve billion, three hundred eight million, five hundred seven thousand, eight hundred twelve".