11543312567 has 2 divisors, whose sum is σ = 11543312568. Its totient is φ = 11543312566.

The previous prime is 11543312527. The next prime is 11543312593. The reversal of 11543312567 is 76521334511.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11543312567 - 2⁸ = 11543312311 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11543312567.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11543312507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5771656283 + 5771656284.

It is an arithmetic number, because the mean of its divisors is an integer number (5771656284).

Almost surely, 2^11543312567 is an apocalyptic number.

11543312567 is a deficient number, since it is larger than the sum of its proper divisors (1).

11543312567 is an equidigital number, since it uses as much as digits as its factorization.

11543312567 is an evil number, because the sum of its binary digits is even.

The product of its digits is 75600, while the sum is 38.

The spelling of 11543312567 in words is "eleven billion, five hundred forty-three million, three hundred twelve thousand, five hundred sixty-seven".