12544224520 has 32 divisors (see below), whose sum is σ = 29884771800. Its totient is φ = 4722531328.

The previous prime is 12544224481. The next prime is 12544224547. The reversal of 12544224520 is 2542244521.

12544224520 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 12526534084 + 17690436 = 111922^2 + 4206^2 .

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 7 ways as a sum of consecutive naturals, for example, 9223015 + ... + 9224374.

Almost surely, 2^12544224520 is an apocalyptic number.

12544224520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12544224520 is an abundant number, since it is smaller than the sum of its proper divisors (17340547280).

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

12544224520 is a wasteful number, since it uses less digits than its factorization.

12544224520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18447417 (or 18447413 counting only the distinct ones).

The product of its (nonzero) digits is 25600, while the sum is 31.

The spelling of 12544224520 in words is "twelve billion, five hundred forty-four million, two hundred twenty-four thousand, five hundred twenty".