163708964647 has 2 divisors, whose sum is σ = 163708964648. Its totient is φ = 163708964646.

The previous prime is 163708964621. The next prime is 163708964687. The reversal of 163708964647 is 746469807361.

163708964647 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is an emirp because it is prime and its reverse (746469807361) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 163708964647 - 2¹⁵ = 163708931879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (163708964687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81854482323 + 81854482324.

It is an arithmetic number, because the mean of its divisors is an integer number (81854482324).

Almost surely, 2^163708964647 is an apocalyptic number.

163708964647 is a deficient number, since it is larger than the sum of its proper divisors (1).

163708964647 is an equidigital number, since it uses as much as digits as its factorization.

163708964647 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36578304, while the sum is 61.

The spelling of 163708964647 in words is "one hundred sixty-three billion, seven hundred eight million, nine hundred sixty-four thousand, six hundred forty-seven".