16544333749 has 2 divisors, whose sum is σ = 16544333750. Its totient is φ = 16544333748.

The previous prime is 16544333737. The next prime is 16544333777. The reversal of 16544333749 is 94733344561.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12697233124 + 3847100625 = 112682^2 + 62025^2 .

It is an emirp because it is prime and its reverse (94733344561) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16544333749 - 2⁹ = 16544333237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16544330749) 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, 8272166874 + 8272166875.

It is an arithmetic number, because the mean of its divisors is an integer number (8272166875).

Almost surely, 2^16544333749 is an apocalyptic number.

It is an amenable number.

16544333749 is a deficient number, since it is larger than the sum of its proper divisors (1).

16544333749 is an equidigital number, since it uses as much as digits as its factorization.

16544333749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3265920, while the sum is 49.

The spelling of 16544333749 in words is "sixteen billion, five hundred forty-four million, three hundred thirty-three thousand, seven hundred forty-nine".