12536643316 has 24 divisors (see below), whose sum is σ = 22077748224. Its totient is φ = 6228786720.

The previous prime is 12536643271. The next prime is 12536643331. The reversal of 12536643316 is 61334663521.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 742666 + ... + 759358.

It is an arithmetic number, because the mean of its divisors is an integer number (919906176).

Almost surely, 2^12536643316 is an apocalyptic number.

It is an amenable number.

12536643316 is a deficient number, since it is larger than the sum of its proper divisors (9541104908).

12536643316 is a wasteful number, since it uses less digits than its factorization.

12536643316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17871 (or 17869 counting only the distinct ones).

The product of its digits is 233280, while the sum is 40.

The spelling of 12536643316 in words is "twelve billion, five hundred thirty-six million, six hundred forty-three thousand, three hundred sixteen".