163316666647 has 2 divisors, whose sum is σ = 163316666648. Its totient is φ = 163316666646.

The previous prime is 163316666581. The next prime is 163316666707. The reversal of 163316666647 is 746666613361.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (746666613361) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-163316666647 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (163316666047) 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, 81658333323 + 81658333324.

It is an arithmetic number, because the mean of its divisors is an integer number (81658333324).

Almost surely, 2^163316666647 is an apocalyptic number.

163316666647 is a deficient number, since it is larger than the sum of its proper divisors (1).

163316666647 is an equidigital number, since it uses as much as digits as its factorization.

163316666647 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11757312, while the sum is 55.

The spelling of 163316666647 in words is "one hundred sixty-three billion, three hundred sixteen million, six hundred sixty-six thousand, six hundred forty-seven".