11143421441 has 8 divisors (see below), whose sum is σ = 11359144320. Its totient is φ = 10929151728.

The previous prime is 11143421413. The next prime is 11143421449. The reversal of 11143421441 is 14412434111.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11143421441 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11143421441.

It is not an unprimeable number, because it can be changed into a prime (11143421449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 347801 + ... + 378486.

It is an arithmetic number, because the mean of its divisors is an integer number (1419893040).

Almost surely, 2^11143421441 is an apocalyptic number.

It is an amenable number.

11143421441 is a deficient number, since it is larger than the sum of its proper divisors (215722879).

11143421441 is an equidigital number, since it uses as much as digits as its factorization.

11143421441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 726583.

The product of its digits is 1536, while the sum is 26.

Adding to 11143421441 its reverse (14412434111), we get a palindrome (25555855552).

The spelling of 11143421441 in words is "eleven billion, one hundred forty-three million, four hundred twenty-one thousand, four hundred forty-one".