12897729876 has 24 divisors (see below), whose sum is σ = 30100971040. Its totient is φ = 4298347872.

The previous prime is 12897729827. The next prime is 12897729917. The reversal of 12897729876 is 67892779821.

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, 50566 + ... + 168381.

Almost surely, 2^12897729876 is an apocalyptic number.

It is an amenable number.

12897729876 is an abundant number, since it is smaller than the sum of its proper divisors (17203241164).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12897729876 is a wasteful number, since it uses less digits than its factorization.

12897729876 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223863 (or 223861 counting only the distinct ones).

The product of its digits is 42674688, while the sum is 66.

The spelling of 12897729876 in words is "twelve billion, eight hundred ninety-seven million, seven hundred twenty-nine thousand, eight hundred seventy-six".