12243504400 has 60 divisors (see below), whose sum is σ = 29433231232. Its totient is φ = 4894369920.

The previous prime is 12243504379. The next prime is 12243504439. The reversal of 12243504400 is 440534221.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 704617 + ... + 721783.

Almost surely, 2^12243504400 is an apocalyptic number.

12243504400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12243504400 is an abundant number, since it is smaller than the sum of its proper divisors (17189726832).

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

12243504400 is a wasteful number, since it uses less digits than its factorization.

12243504400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18968 (or 18957 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

The spelling of 12243504400 in words is "twelve billion, two hundred forty-three million, five hundred four thousand, four hundred".