16544689771 has 2 divisors, whose sum is σ = 16544689772. Its totient is φ = 16544689770.

The previous prime is 16544689753. The next prime is 16544689813. The reversal of 16544689771 is 17798644561.

It is a weak prime.

It is an emirp because it is prime and its reverse (17798644561) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16544689771 - 2¹⁷ = 16544558699 is a prime.

It is not a weakly prime, because it can be changed into another prime (16544689741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8272344885 + 8272344886.

It is an arithmetic number, because the mean of its divisors is an integer number (8272344886).

Almost surely, 2^16544689771 is an apocalyptic number.

16544689771 is a deficient number, since it is larger than the sum of its proper divisors (1).

16544689771 is an equidigital number, since it uses as much as digits as its factorization.

16544689771 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10160640, while the sum is 58.

The spelling of 16544689771 in words is "sixteen billion, five hundred forty-four million, six hundred eighty-nine thousand, seven hundred seventy-one".