12443041511 has 4 divisors (see below), whose sum is σ = 12445157472. Its totient is φ = 12440925552.

The previous prime is 12443041487. The next prime is 12443041517. The reversal of 12443041511 is 11514034421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11514034421 = 2647 ⋅4349843.

It is a cyclic number.

It is not a de Polignac number, because 12443041511 - 2⁶ = 12443041447 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12443041517) 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, 1049135 + ... + 1060928.

It is an arithmetic number, because the mean of its divisors is an integer number (3111289368).

Almost surely, 2^12443041511 is an apocalyptic number.

12443041511 is a deficient number, since it is larger than the sum of its proper divisors (2115961).

12443041511 is an equidigital number, since it uses as much as digits as its factorization.

12443041511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2115960.

The product of its (nonzero) digits is 1920, while the sum is 26.

Adding to 12443041511 its reverse (11514034421), we get a palindrome (23957075932).

The spelling of 12443041511 in words is "twelve billion, four hundred forty-three million, forty-one thousand, five hundred eleven".