12667322943 has 24 divisors (see below), whose sum is σ = 20699917056. Its totient is φ = 7677163800.

The previous prime is 12667322909. The next prime is 12667322947. The reversal of 12667322943 is 34922376621.

It is not a de Polignac number, because 12667322943 - 2⁸ = 12667322687 is a prime.

It is a super-2 number, since 2×12667322943² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12667322947) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2366823 + ... + 2372168.

It is an arithmetic number, because the mean of its divisors is an integer number (862496544).

Almost surely, 2^12667322943 is an apocalyptic number.

12667322943 is a deficient number, since it is larger than the sum of its proper divisors (8032594113).

12667322943 is an equidigital number, since it uses as much as digits as its factorization.

12667322943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4739017 (or 4739005 counting only the distinct ones).

The product of its digits is 653184, while the sum is 45.

The spelling of 12667322943 in words is "twelve billion, six hundred sixty-seven million, three hundred twenty-two thousand, nine hundred forty-three".