11123142532543 has 4 divisors (see below), whose sum is σ = 11123936432968. Its totient is φ = 11122348632120.

The previous prime is 11123142532499. The next prime is 11123142532577. The reversal of 11123142532543 is 34523524132111.

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

It is a cyclic number.

It is not a de Polignac number, because 11123142532543 - 2⁴¹ = 8924119276991 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 (11123142532343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 396929196 + ... + 396957217.

It is an arithmetic number, because the mean of its divisors is an integer number (2780984108242).

Almost surely, 2^{11123142532543} is an apocalyptic number.

11123142532543 is a deficient number, since it is larger than the sum of its proper divisors (793900425).

11123142532543 is an equidigital number, since it uses as much as digits as its factorization.

11123142532543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 793900424.

The product of its digits is 86400, while the sum is 37.

Adding to 11123142532543 its reverse (34523524132111), we get a palindrome (45646666664654).

The spelling of 11123142532543 in words is "eleven trillion, one hundred twenty-three billion, one hundred forty-two million, five hundred thirty-two thousand, five hundred forty-three".