12543299233 has 2 divisors, whose sum is σ = 12543299234. Its totient is φ = 12543299232.

The previous prime is 12543299203. The next prime is 12543299243. The reversal of 12543299233 is 33299234521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12479570944 + 63728289 = 111712^2 + 7983^2 .

It is a cyclic number.

It is not a de Polignac number, because 12543299233 - 2⁵ = 12543299201 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12543299233.

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, 6271649616 + 6271649617.

It is an arithmetic number, because the mean of its divisors is an integer number (6271649617).

Almost surely, 2^12543299233 is an apocalyptic number.

It is an amenable number.

12543299233 is a deficient number, since it is larger than the sum of its proper divisors (1).

12543299233 is an equidigital number, since it uses as much as digits as its factorization.

12543299233 is an evil number, because the sum of its binary digits is even.

The product of its digits is 349920, while the sum is 43.

The spelling of 12543299233 in words is "twelve billion, five hundred forty-three million, two hundred ninety-nine thousand, two hundred thirty-three".