11532565543 has 2 divisors, whose sum is σ = 11532565544. Its totient is φ = 11532565542.

The previous prime is 11532565537. The next prime is 11532565589. The reversal of 11532565543 is 34556523511.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11532565543 - 2¹⁷ = 11532434471 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11532565496 and 11532565505.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11532565523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5766282771 + 5766282772.

It is an arithmetic number, because the mean of its divisors is an integer number (5766282772).

Almost surely, 2^11532565543 is an apocalyptic number.

11532565543 is a deficient number, since it is larger than the sum of its proper divisors (1).

11532565543 is an equidigital number, since it uses as much as digits as its factorization.

11532565543 is an evil number, because the sum of its binary digits is even.

The product of its digits is 270000, while the sum is 40.

The spelling of 11532565543 in words is "eleven billion, five hundred thirty-two million, five hundred sixty-five thousand, five hundred forty-three".