111540332543 has 2 divisors, whose sum is σ = 111540332544. Its totient is φ = 111540332542.

The previous prime is 111540332537. The next prime is 111540332591. The reversal of 111540332543 is 345233045111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 111540332543 - 2³⁰ = 110466590719 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111540332593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55770166271 + 55770166272.

It is an arithmetic number, because the mean of its divisors is an integer number (55770166272).

Almost surely, 2^111540332543 is an apocalyptic number.

111540332543 is a deficient number, since it is larger than the sum of its proper divisors (1).

111540332543 is an equidigital number, since it uses as much as digits as its factorization.

111540332543 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21600, while the sum is 32.

Adding to 111540332543 its reverse (345233045111), we get a palindrome (456773377654).

The spelling of 111540332543 in words is "one hundred eleven billion, five hundred forty million, three hundred thirty-two thousand, five hundred forty-three".