12998997686 has 8 divisors (see below), whose sum is σ = 20127480384. Its totient is φ = 6289837560.

The previous prime is 12998997679. The next prime is 12998997709. The reversal of 12998997686 is 68679989921.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

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, 104830565 + ... + 104830688.

It is an arithmetic number, because the mean of its divisors is an integer number (2515935048).

Almost surely, 2^12998997686 is an apocalyptic number.

12998997686 is a deficient number, since it is larger than the sum of its proper divisors (7128482698).

12998997686 is a wasteful number, since it uses less digits than its factorization.

12998997686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209661286.

The product of its digits is 211631616, while the sum is 74.

The spelling of 12998997686 in words is "twelve billion, nine hundred ninety-eight million, nine hundred ninety-seven thousand, six hundred eighty-six".