12444132287 has 4 divisors (see below), whose sum is σ = 12444355560. Its totient is φ = 12443909016.

The previous prime is 12444132229. The next prime is 12444132301. The reversal of 12444132287 is 78223144421.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 78223144421 = 5653 ⋅13837457.

It is a cyclic number.

It is not a de Polignac number, because 12444132287 - 2⁸ = 12444132031 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12444132287.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12444122287) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49373 + ... + 165305.

It is an arithmetic number, because the mean of its divisors is an integer number (3111088890).

Almost surely, 2^12444132287 is an apocalyptic number.

12444132287 is a deficient number, since it is larger than the sum of its proper divisors (223273).

12444132287 is a wasteful number, since it uses less digits than its factorization.

12444132287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223272.

The product of its digits is 86016, while the sum is 38.

The spelling of 12444132287 in words is "twelve billion, four hundred forty-four million, one hundred thirty-two thousand, two hundred eighty-seven".