12689143676 has 18 divisors (see below), whose sum is σ = 24408250440. Its totient is φ = 5767792360.

The previous prime is 12689143661. The next prime is 12689143679. The reversal of 12689143676 is 67634198621.

It is a super-2 number, since 2×12689143676² (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 (12689143679) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13108136 + ... + 13109103.

Almost surely, 2^12689143676 is an apocalyptic number.

It is an amenable number.

12689143676 is a deficient number, since it is larger than the sum of its proper divisors (11719106764).

12689143676 is a wasteful number, since it uses less digits than its factorization.

12689143676 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26217265 (or 26217252 counting only the distinct ones).

The product of its digits is 2612736, while the sum is 53.

Subtracting 12689143676 from its reverse (67634198621), we obtain a palindrome (54945054945).

The spelling of 12689143676 in words is "twelve billion, six hundred eighty-nine million, one hundred forty-three thousand, six hundred seventy-six".