12543513344 has 18 divisors (see below), whose sum is σ = 25038029100. Its totient is φ = 6271756544.

The previous prime is 12543513343. The next prime is 12543513383. The reversal of 12543513344 is 44331534521.

It is a super-4 number, since 4×12543513344⁴ (a number of 41 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (12543513341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24498794 + ... + 24499305.

Almost surely, 2^12543513344 is an apocalyptic number.

It is an amenable number.

12543513344 is a deficient number, since it is larger than the sum of its proper divisors (12494515756).

12543513344 is an frugal number, since it uses more digits than its factorization.

12543513344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48998115 (or 48998101 counting only the distinct ones).

The product of its digits is 86400, while the sum is 35.

The spelling of 12543513344 in words is "twelve billion, five hundred forty-three million, five hundred thirteen thousand, three hundred forty-four".