12544440213 has 16 divisors (see below), whose sum is σ = 16994105856. Its totient is φ = 8229903600.

The previous prime is 12544440197. The next prime is 12544440239. The reversal of 12544440213 is 31204444521.

It is not a de Polignac number, because 12544440213 - 2⁴ = 12544440197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12544440313) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 80931 + ... + 177872.

It is an arithmetic number, because the mean of its divisors is an integer number (1062131616).

Almost surely, 2^12544440213 is an apocalyptic number.

It is an amenable number.

12544440213 is a deficient number, since it is larger than the sum of its proper divisors (4449665643).

12544440213 is a wasteful number, since it uses less digits than its factorization.

12544440213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259064.

The product of its (nonzero) digits is 15360, while the sum is 30.

Adding to 12544440213 its reverse (31204444521), we get a palindrome (43748884734).

The spelling of 12544440213 in words is "twelve billion, five hundred forty-four million, four hundred forty thousand, two hundred thirteen".