12544504400 has 30 divisors (see below), whose sum is σ = 30138172782. Its totient is φ = 5017801600.

The previous prime is 12544504363. The next prime is 12544504429. The reversal of 12544504400 is 440544521.

It can be written as a sum of positive squares in 3 ways, for example, as 2358850624 + 10185653776 = 48568^2 + 100924^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 15680231 + ... + 15681030.

Almost surely, 2^12544504400 is an apocalyptic number.

12544504400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12544504400 is an abundant number, since it is smaller than the sum of its proper divisors (17593668382).

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

12544504400 is a wasteful number, since it uses less digits than its factorization.

12544504400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31361279 (or 31361268 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 29.

The spelling of 12544504400 in words is "twelve billion, five hundred forty-four million, five hundred four thousand, four hundred".