16545724057493 has 2 divisors, whose sum is σ = 16545724057494. Its totient is φ = 16545724057492.

The previous prime is 16545724057477. The next prime is 16545724057567. The reversal of 16545724057493 is 39475042754561.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15883269685924 + 662454371569 = 3985382^2 + 813913^2 .

It is a cyclic number.

It is not a de Polignac number, because 16545724057493 - 2⁴ = 16545724057477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16545724056493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8272862028746 + 8272862028747.

It is an arithmetic number, because the mean of its divisors is an integer number (8272862028747).

Almost surely, 2^{16545724057493} is an apocalyptic number.

It is an amenable number.

16545724057493 is a deficient number, since it is larger than the sum of its proper divisors (1).

16545724057493 is an equidigital number, since it uses as much as digits as its factorization.

16545724057493 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 127008000, while the sum is 62.

The spelling of 16545724057493 in words is "sixteen trillion, five hundred forty-five billion, seven hundred twenty-four million, fifty-seven thousand, four hundred ninety-three".