12591144443 has 8 divisors (see below), whose sum is σ = 12812815680. Its totient is φ = 12370465800.

The previous prime is 12591144421. The next prime is 12591144451. The reversal of 12591144443 is 34444119521.

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 12591144443 - 2⁸ = 12591144187 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12591144397 and 12591144406.

It is not an unprimeable number, because it can be changed into a prime (12591144043) 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, 222533 + ... + 273318.

It is an arithmetic number, because the mean of its divisors is an integer number (1601601960).

Almost surely, 2^12591144443 is an apocalyptic number.

12591144443 is a deficient number, since it is larger than the sum of its proper divisors (221671237).

12591144443 is an equidigital number, since it uses as much as digits as its factorization.

12591144443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 496297.

The product of its digits is 69120, while the sum is 38.

The spelling of 12591144443 in words is "twelve billion, five hundred ninety-one million, one hundred forty-four thousand, four hundred forty-three".