163964678263 has 2 divisors, whose sum is σ = 163964678264. Its totient is φ = 163964678262.

The previous prime is 163964678197. The next prime is 163964678291. The reversal of 163964678263 is 362876469361.

163964678263 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 not a de Polignac number, because 163964678263 - 2¹⁷ = 163964547191 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (163964673263) 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, 81982339131 + 81982339132.

It is an arithmetic number, because the mean of its divisors is an integer number (81982339132).

Almost surely, 2^163964678263 is an apocalyptic number.

163964678263 is a deficient number, since it is larger than the sum of its proper divisors (1).

163964678263 is an equidigital number, since it uses as much as digits as its factorization.

163964678263 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 47029248, while the sum is 61.

The spelling of 163964678263 in words is "one hundred sixty-three billion, nine hundred sixty-four million, six hundred seventy-eight thousand, two hundred sixty-three".