11123134562543 has 2 divisors, whose sum is σ = 11123134562544. Its totient is φ = 11123134562542.

The previous prime is 11123134562521. The next prime is 11123134562569. The reversal of 11123134562543 is 34526543132111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11123134562543 - 2⁴² = 6725088051439 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11123134562543.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11123134561543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5561567281271 + 5561567281272.

It is an arithmetic number, because the mean of its divisors is an integer number (5561567281272).

Almost surely, 2^{11123134562543} is an apocalyptic number.

11123134562543 is a deficient number, since it is larger than the sum of its proper divisors (1).

11123134562543 is an equidigital number, since it uses as much as digits as its factorization.

11123134562543 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 259200, while the sum is 41.

Adding to 11123134562543 its reverse (34526543132111), we get a palindrome (45649677694654).

The spelling of 11123134562543 in words is "eleven trillion, one hundred twenty-three billion, one hundred thirty-four million, five hundred sixty-two thousand, five hundred forty-three".