12645811868 has 6 divisors (see below), whose sum is σ = 22130170776. Its totient is φ = 6322905932.

The previous prime is 12645811847. The next prime is 12645811873. The reversal of 12645811868 is 86811854621.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1580726480 + ... + 1580726487.

It is an arithmetic number, because the mean of its divisors is an integer number (3688361796).

Almost surely, 2^12645811868 is an apocalyptic number.

It is an amenable number.

12645811868 is a deficient number, since it is larger than the sum of its proper divisors (9484358908).

12645811868 is a wasteful number, since it uses less digits than its factorization.

12645811868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3161452971 (or 3161452969 counting only the distinct ones).

The product of its digits is 737280, while the sum is 50.

The spelling of 12645811868 in words is "twelve billion, six hundred forty-five million, eight hundred eleven thousand, eight hundred sixty-eight".