12447843967 has 16 divisors (see below), whose sum is σ = 13454112672. Its totient is φ = 11448627840.

The previous prime is 12447843953. The next prime is 12447844021. The reversal of 12447843967 is 76934874421.

It is not a de Polignac number, because 12447843967 - 2¹⁹ = 12447319679 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12447843917) 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, 5024133 + ... + 5026609.

It is an arithmetic number, because the mean of its divisors is an integer number (840882042).

Almost surely, 2^12447843967 is an apocalyptic number.

12447843967 is a deficient number, since it is larger than the sum of its proper divisors (1006268705).

12447843967 is a wasteful number, since it uses less digits than its factorization.

12447843967 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3738.

The product of its digits is 8128512, while the sum is 55.

The spelling of 12447843967 in words is "twelve billion, four hundred forty-seven million, eight hundred forty-three thousand, nine hundred sixty-seven".