12543000529 has 2 divisors, whose sum is σ = 12543000530. Its totient is φ = 12543000528.

The previous prime is 12543000523. The next prime is 12543000559. The reversal of 12543000529 is 92500034521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10941160000 + 1601840529 = 104600^2 + 40023^2 .

It is a cyclic number.

It is not a de Polignac number, because 12543000529 - 2¹³ = 12542992337 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12543000529.

It is not a weakly prime, because it can be changed into another prime (12543000523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6271500264 + 6271500265.

It is an arithmetic number, because the mean of its divisors is an integer number (6271500265).

Almost surely, 2^12543000529 is an apocalyptic number.

It is an amenable number.

12543000529 is a deficient number, since it is larger than the sum of its proper divisors (1).

12543000529 is an equidigital number, since it uses as much as digits as its factorization.

12543000529 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10800, while the sum is 31.

The spelling of 12543000529 in words is "twelve billion, five hundred forty-three million, five hundred twenty-nine", and thus it is an aban number.