12186842544 has 120 divisors (see below), whose sum is σ = 35025174912. Its totient is φ = 3954216960.

The previous prime is 12186842533. The next prime is 12186842567. The reversal of 12186842544 is 44524868121.

12186842544 is a `hidden beast` number, since 1 + 2 + 1 + 8 + 68 + 42 + 544 = 666.

12186842544 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 12186842544.

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 23 ways as a sum of consecutive naturals, for example, 844897 + ... + 859199.

Almost surely, 2^12186842544 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 12186842544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17512587456).

12186842544 is an abundant number, since it is smaller than the sum of its proper divisors (22838332368).

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

12186842544 is a wasteful number, since it uses less digits than its factorization.

12186842544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14475 (or 14466 counting only the distinct ones).

The product of its digits is 491520, while the sum is 45.

The spelling of 12186842544 in words is "twelve billion, one hundred eighty-six million, eight hundred forty-two thousand, five hundred forty-four".