12543797259 has 24 divisors (see below), whose sum is σ = 21925294560. Its totient is φ = 6746243328.

The previous prime is 12543797249. The next prime is 12543797267. The reversal of 12543797259 is 95279734521.

12543797259 is a `hidden beast` number, since 1 + 2 + 543 + 7 + 97 + 2 + 5 + 9 = 666.

12543797259 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12543797259 - 2¹¹ = 12543795211 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12543797249) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 5855044 + ... + 5857185.

It is an arithmetic number, because the mean of its divisors is an integer number (913553940).

Almost surely, 2^12543797259 is an apocalyptic number.

12543797259 is a deficient number, since it is larger than the sum of its proper divisors (9381497301).

12543797259 is a wasteful number, since it uses less digits than its factorization.

12543797259 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11712259 (or 11712256 counting only the distinct ones).

The product of its digits is 4762800, while the sum is 54.

The spelling of 12543797259 in words is "twelve billion, five hundred forty-three million, seven hundred ninety-seven thousand, two hundred fifty-nine".