12543113456 has 40 divisors (see below), whose sum is σ = 24889386144. Its totient is φ = 6121820160.

The previous prime is 12543113449. The next prime is 12543113489. The reversal of 12543113456 is 65431134521.

12543113456 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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, 57941 + ... + 168651.

Almost surely, 2^12543113456 is an apocalyptic number.

12543113456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12543113456 is a deficient number, since it is larger than the sum of its proper divisors (12346272688).

12543113456 is a wasteful number, since it uses less digits than its factorization.

12543113456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110889 (or 110883 counting only the distinct ones).

The product of its digits is 43200, while the sum is 35.

Adding to 12543113456 its reverse (65431134521), we get a palindrome (77974247977).

The spelling of 12543113456 in words is "twelve billion, five hundred forty-three million, one hundred thirteen thousand, four hundred fifty-six".