11543443443 has 48 divisors (see below), whose sum is σ = 19298912256. Its totient is φ = 6512538240.

The previous prime is 11543443367. The next prime is 11543443447. The reversal of 11543443443 is 34434434511.

11543443443 is a `hidden beast` number, since 1 + 1 + 543 + 44 + 34 + 43 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-11543443443 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11543443398 and 11543443407.

It is not an unprimeable number, because it can be changed into a prime (11543443447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2107198 + ... + 2112668.

It is an arithmetic number, because the mean of its divisors is an integer number (402060672).

Almost surely, 2^11543443443 is an apocalyptic number.

11543443443 is a deficient number, since it is larger than the sum of its proper divisors (7755468813).

11543443443 is a wasteful number, since it uses less digits than its factorization.

11543443443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5904 (or 5901 counting only the distinct ones).

The product of its digits is 138240, while the sum is 36.

Adding to 11543443443 its reverse (34434434511), we get a palindrome (45977877954).

The spelling of 11543443443 in words is "eleven billion, five hundred forty-three million, four hundred forty-three thousand, four hundred forty-three".