12443713891 has 8 divisors (see below), whose sum is σ = 14433647360. Its totient is φ = 10506845448.

The previous prime is 12443713861. The next prime is 12443713903. The reversal of 12443713891 is 19831734421.

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

It is a cyclic number.

It is not a de Polignac number, because 12443713891 - 2¹⁵ = 12443681123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12443713831) 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, 13265751 + ... + 13266688.

It is an arithmetic number, because the mean of its divisors is an integer number (1804205920).

Almost surely, 2^12443713891 is an apocalyptic number.

12443713891 is a deficient number, since it is larger than the sum of its proper divisors (1989933469).

12443713891 is an equidigital number, since it uses as much as digits as its factorization.

12443713891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26532513.

The product of its digits is 145152, while the sum is 43.

The spelling of 12443713891 in words is "twelve billion, four hundred forty-three million, seven hundred thirteen thousand, eight hundred ninety-one".