12318668244 has 84 divisors (see below), whose sum is σ = 32365290804. Its totient is φ = 4100689152.

The previous prime is 12318668213. The next prime is 12318668249. The reversal of 12318668244 is 44286681321.

It can be written as a sum of positive squares in 2 ways, for example, as 5537145744 + 6781522500 = 74412^2 + 82350^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12318668244.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12318668249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 2554924 + ... + 2559740.

It is an arithmetic number, because the mean of its divisors is an integer number (385301081).

Almost surely, 2^12318668244 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12318668244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16182645402).

12318668244 is an abundant number, since it is smaller than the sum of its proper divisors (20046622560).

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

12318668244 is an equidigital number, since it uses as much as digits as its factorization.

12318668244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5716 (or 5699 counting only the distinct ones).

The product of its digits is 442368, while the sum is 45.

The spelling of 12318668244 in words is "twelve billion, three hundred eighteen million, six hundred sixty-eight thousand, two hundred forty-four".