11111042443 has 4 divisors (see below), whose sum is σ = 11111280400. Its totient is φ = 11110804488.

The previous prime is 11111042431. The next prime is 11111042489. The reversal of 11111042443 is 34424011111.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11111042443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11111042143) 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, 23280 + ... + 150877.

It is an arithmetic number, because the mean of its divisors is an integer number (2777820100).

Almost surely, 2^11111042443 is an apocalyptic number.

11111042443 is a deficient number, since it is larger than the sum of its proper divisors (237957).

11111042443 is an equidigital number, since it uses as much as digits as its factorization.

11111042443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237956.

The product of its (nonzero) digits is 384, while the sum is 22.

Adding to 11111042443 its reverse (34424011111), we get a palindrome (45535053554).

The spelling of 11111042443 in words is "eleven billion, one hundred eleven million, forty-two thousand, four hundred forty-three".