16661165159 has 2 divisors, whose sum is σ = 16661165160. Its totient is φ = 16661165158.

The previous prime is 16661165141. The next prime is 16661165161. The reversal of 16661165159 is 95156116661.

16661165159 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 is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16661165159 is a prime.

Together with 16661165161, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16661165459) 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, 8330582579 + 8330582580.

It is an arithmetic number, because the mean of its divisors is an integer number (8330582580).

Almost surely, 2^16661165159 is an apocalyptic number.

16661165159 is a deficient number, since it is larger than the sum of its proper divisors (1).

16661165159 is an equidigital number, since it uses as much as digits as its factorization.

16661165159 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 291600, while the sum is 47.

The spelling of 16661165159 in words is "sixteen billion, six hundred sixty-one million, one hundred sixty-five thousand, one hundred fifty-nine".