12445991168 has 72 divisors (see below), whose sum is σ = 27093628800. Its totient is φ = 5671471104.

The previous prime is 12445991149. The next prime is 12445991191. The reversal of 12445991168 is 86119954421.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 239243 + ... + 286581.

It is an arithmetic number, because the mean of its divisors is an integer number (376300400).

Almost surely, 2^12445991168 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 12445991168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13546814400).

12445991168 is an abundant number, since it is smaller than the sum of its proper divisors (14647637632).

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

12445991168 is an equidigital number, since it uses as much as digits as its factorization.

12445991168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47447 (or 47433 counting only the distinct ones).

The product of its digits is 622080, while the sum is 50.

The spelling of 12445991168 in words is "twelve billion, four hundred forty-five million, nine hundred ninety-one thousand, one hundred sixty-eight".