12544267209 has 8 divisors (see below), whose sum is σ = 16726323360. Its totient is φ = 8362527936.

The previous prime is 12544267193. The next prime is 12544267243. The reversal of 12544267209 is 90276244521.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12544267209 - 2⁴ = 12544267193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12544267259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37882 + ... + 162860.

It is an arithmetic number, because the mean of its divisors is an integer number (2090790420).

Almost surely, 2^12544267209 is an apocalyptic number.

It is an amenable number.

12544267209 is a deficient number, since it is larger than the sum of its proper divisors (4182056151).

12544267209 is a wasteful number, since it uses less digits than its factorization.

12544267209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158439.

The product of its (nonzero) digits is 241920, while the sum is 42.

The spelling of 12544267209 in words is "twelve billion, five hundred forty-four million, two hundred sixty-seven thousand, two hundred nine".