12643170964 has 12 divisors (see below), whose sum is σ = 22126336288. Its totient is φ = 6321360600.

The previous prime is 12643170961. The next prime is 12643171027. The reversal of 12643170964 is 46907134621.

It is a self number, because there is not a number n which added to its sum of digits gives 12643170964.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12643170961) 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, 196369 + ... + 252679.

Almost surely, 2^12643170964 is an apocalyptic number.

It is an amenable number.

12643170964 is a deficient number, since it is larger than the sum of its proper divisors (9483165324).

12643170964 is a wasteful number, since it uses less digits than its factorization.

12643170964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112446 (or 112444 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 43.

The spelling of 12643170964 in words is "twelve billion, six hundred forty-three million, one hundred seventy thousand, nine hundred sixty-four".