12174721853 has 32 divisors (see below), whose sum is σ = 15317729280. Its totient is φ = 9436020480.

The previous prime is 12174721831. The next prime is 12174721873. The reversal of 12174721853 is 35812747121.

It is a cyclic number.

It is not a de Polignac number, because 12174721853 - 2¹⁰ = 12174720829 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12174721853.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12174721873) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 500900 + ... + 524642.

It is an arithmetic number, because the mean of its divisors is an integer number (478679040).

Almost surely, 2^12174721853 is an apocalyptic number.

It is an amenable number.

12174721853 is a deficient number, since it is larger than the sum of its proper divisors (3143007427).

12174721853 is a wasteful number, since it uses less digits than its factorization.

12174721853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23937.

The product of its digits is 94080, while the sum is 41.

The spelling of 12174721853 in words is "twelve billion, one hundred seventy-four million, seven hundred twenty-one thousand, eight hundred fifty-three".