12543000533 has 4 divisors (see below), whose sum is σ = 14334857760. Its totient is φ = 10751143308.

The previous prime is 12543000529. The next prime is 12543000559. The reversal of 12543000533 is 33500034521.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12543000533 - 2² = 12543000529 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12543000523) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 895928603 + ... + 895928616.

It is an arithmetic number, because the mean of its divisors is an integer number (3583714440).

Almost surely, 2^12543000533 is an apocalyptic number.

It is an amenable number.

12543000533 is a deficient number, since it is larger than the sum of its proper divisors (1791857227).

12543000533 is an equidigital number, since it uses as much as digits as its factorization.

12543000533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1791857226.

The product of its (nonzero) digits is 5400, while the sum is 26.

The spelling of 12543000533 in words is "twelve billion, five hundred forty-three million, five hundred thirty-three", and thus it is an aban number.