11724333242509 has 2 divisors, whose sum is σ = 11724333242510. Its totient is φ = 11724333242508.

The previous prime is 11724333242441. The next prime is 11724333242551. The reversal of 11724333242509 is 90524233342711.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11683578515625 + 40754726884 = 3418125^2 + 201878^2 .

It is a cyclic number.

It is not a de Polignac number, because 11724333242509 - 2⁹ = 11724333241997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11724333242569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5862166621254 + 5862166621255.

It is an arithmetic number, because the mean of its divisors is an integer number (5862166621255).

Almost surely, 2^{11724333242509} is an apocalyptic number.

It is an amenable number.

11724333242509 is a deficient number, since it is larger than the sum of its proper divisors (1).

11724333242509 is an equidigital number, since it uses as much as digits as its factorization.

11724333242509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1088640, while the sum is 46.

The spelling of 11724333242509 in words is "eleven trillion, seven hundred twenty-four billion, three hundred thirty-three million, two hundred forty-two thousand, five hundred nine".