12543299243 has 2 divisors, whose sum is σ = 12543299244. Its totient is φ = 12543299242.

The previous prime is 12543299233. The next prime is 12543299291. The reversal of 12543299243 is 34299234521.

It is a weak prime.

It is an emirp because it is prime and its reverse (34299234521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12543299243 - 2⁸ = 12543298987 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 12543299194 and 12543299203.

It is not a weakly prime, because it can be changed into another prime (12543299203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6271649621 + 6271649622.

It is an arithmetic number, because the mean of its divisors is an integer number (6271649622).

Almost surely, 2^12543299243 is an apocalyptic number.

12543299243 is a deficient number, since it is larger than the sum of its proper divisors (1).

12543299243 is an equidigital number, since it uses as much as digits as its factorization.

12543299243 is an evil number, because the sum of its binary digits is even.

The product of its digits is 466560, while the sum is 44.

The spelling of 12543299243 in words is "twelve billion, five hundred forty-three million, two hundred ninety-nine thousand, two hundred forty-three".