12685821374 has 8 divisors (see below), whose sum is σ = 19077650280. Its totient is φ = 6326604616.

The previous prime is 12685821359. The next prime is 12685821427. The reversal of 12685821374 is 47312858621.

12685821374 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8152064 + ... + 8153619.

It is an arithmetic number, because the mean of its divisors is an integer number (2384706285).

Almost surely, 2^12685821374 is an apocalyptic number.

12685821374 is a deficient number, since it is larger than the sum of its proper divisors (6391828906).

12685821374 is a wasteful number, since it uses less digits than its factorization.

12685821374 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16306074.

The product of its digits is 645120, while the sum is 47.

The spelling of 12685821374 in words is "twelve billion, six hundred eighty-five million, eight hundred twenty-one thousand, three hundred seventy-four".