12444544219 has 8 divisors (see below), whose sum is σ = 12530926800. Its totient is φ = 12358200096.

The previous prime is 12444544163. The next prime is 12444544237. The reversal of 12444544219 is 91244544421.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12444544219 is a prime.

It is a super-2 number, since 2×12444544219² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12444544249) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1007509 + ... + 1019785.

It is an arithmetic number, because the mean of its divisors is an integer number (1566365850).

Almost surely, 2^12444544219 is an apocalyptic number.

12444544219 is a deficient number, since it is larger than the sum of its proper divisors (86382581).

12444544219 is a wasteful number, since it uses less digits than its factorization.

12444544219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19229.

The product of its digits is 184320, while the sum is 40.

The spelling of 12444544219 in words is "twelve billion, four hundred forty-four million, five hundred forty-four thousand, two hundred nineteen".