16544142089 has 2 divisors, whose sum is σ = 16544142090. Its totient is φ = 16544142088.

The previous prime is 16544142037. The next prime is 16544142119. The reversal of 16544142089 is 98024144561.

16544142089 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16251150400 + 292991689 = 127480^2 + 17117^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16544142089 is a prime.

It is a super-2 number, since 2×16544142089² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (16544172089) 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, 8272071044 + 8272071045.

It is an arithmetic number, because the mean of its divisors is an integer number (8272071045).

Almost surely, 2^16544142089 is an apocalyptic number.

It is an amenable number.

16544142089 is a deficient number, since it is larger than the sum of its proper divisors (1).

16544142089 is an equidigital number, since it uses as much as digits as its factorization.

16544142089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 276480, while the sum is 44.

The spelling of 16544142089 in words is "sixteen billion, five hundred forty-four million, one hundred forty-two thousand, eighty-nine".