12544844999 has 2 divisors, whose sum is σ = 12544845000. Its totient is φ = 12544844998.

The previous prime is 12544844971. The next prime is 12544845073. The reversal of 12544844999 is 99944844521.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12544844999 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12544844959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6272422499 + 6272422500.

It is an arithmetic number, because the mean of its divisors is an integer number (6272422500).

Almost surely, 2^12544844999 is an apocalyptic number.

12544844999 is a deficient number, since it is larger than the sum of its proper divisors (1).

12544844999 is an equidigital number, since it uses as much as digits as its factorization.

12544844999 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14929920, while the sum is 59.

The spelling of 12544844999 in words is "twelve billion, five hundred forty-four million, eight hundred forty-four thousand, nine hundred ninety-nine".