12543646224 has 20 divisors (see below), whose sum is σ = 32404419536. Its totient is φ = 4181215392.

The previous prime is 12543646189. The next prime is 12543646243. The reversal of 12543646224 is 42264634521.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 130662934 + ... + 130663029.

Almost surely, 2^12543646224 is an apocalyptic number.

It is an amenable number.

12543646224 is an abundant number, since it is smaller than the sum of its proper divisors (19860773312).

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

12543646224 is a wasteful number, since it uses less digits than its factorization.

12543646224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261325974 (or 261325968 counting only the distinct ones).

The product of its digits is 276480, while the sum is 39.

The spelling of 12543646224 in words is "twelve billion, five hundred forty-three million, six hundred forty-six thousand, two hundred twenty-four".