12322504440 has 96 divisors (see below), whose sum is σ = 40125618000. Its totient is φ = 3279644160.

The previous prime is 12322504361. The next prime is 12322504477. The reversal of 12322504440 is 4440522321.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 154711 + ... + 220409.

Almost surely, 2^12322504440 is an apocalyptic number.

12322504440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12322504440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20062809000).

12322504440 is an abundant number, since it is smaller than the sum of its proper divisors (27803113560).

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

12322504440 is a wasteful number, since it uses less digits than its factorization.

12322504440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66237 (or 66230 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

The spelling of 12322504440 in words is "twelve billion, three hundred twenty-two million, five hundred four thousand, four hundred forty".