11543540717 has 2 divisors, whose sum is σ = 11543540718. Its totient is φ = 11543540716.

The previous prime is 11543540713. The next prime is 11543540777. The reversal of 11543540717 is 71704534511.

It is a happy number.

11543540717 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8175595561 + 3367945156 = 90419^2 + 58034^2 .

It is a cyclic number.

It is not a de Polignac number, because 11543540717 - 2² = 11543540713 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11543540713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5771770358 + 5771770359.

It is an arithmetic number, because the mean of its divisors is an integer number (5771770359).

Almost surely, 2^11543540717 is an apocalyptic number.

It is an amenable number.

11543540717 is a deficient number, since it is larger than the sum of its proper divisors (1).

11543540717 is an equidigital number, since it uses as much as digits as its factorization.

11543540717 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 58800, while the sum is 38.

The spelling of 11543540717 in words is "eleven billion, five hundred forty-three million, five hundred forty thousand, seven hundred seventeen".