12543244535 has 64 divisors (see below), whose sum is σ = 16544563200. Its totient is φ = 9098635392.

The previous prime is 12543244481. The next prime is 12543244547. The reversal of 12543244535 is 53544234521.

It is a cyclic number.

It is not a de Polignac number, because 12543244535 - 2¹⁰ = 12543243511 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 47692814 + ... + 47693076.

It is an arithmetic number, because the mean of its divisors is an integer number (258508800).

Almost surely, 2^12543244535 is an apocalyptic number.

12543244535 is a deficient number, since it is larger than the sum of its proper divisors (4001318665).

12543244535 is a wasteful number, since it uses less digits than its factorization.

12543244535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 540.

The product of its digits is 288000, while the sum is 38.

The spelling of 12543244535 in words is "twelve billion, five hundred forty-three million, two hundred forty-four thousand, five hundred thirty-five".