320163588889 has 2 divisors, whose sum is σ = 320163588890. Its totient is φ = 320163588888.

The previous prime is 320163588883. The next prime is 320163588929. The reversal of 320163588889 is 988885361023.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 219473510400 + 100690078489 = 468480^2 + 317317^2 .

It is a cyclic number.

It is not a de Polignac number, because 320163588889 - 2³ = 320163588881 is a prime.

It is not a weakly prime, because it can be changed into another prime (320163588881) 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, 160081794444 + 160081794445.

It is an arithmetic number, because the mean of its divisors is an integer number (160081794445).

Almost surely, 2^320163588889 is an apocalyptic number.

It is an amenable number.

320163588889 is a deficient number, since it is larger than the sum of its proper divisors (1).

320163588889 is an equidigital number, since it uses as much as digits as its factorization.

320163588889 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19906560, while the sum is 61.

The spelling of 320163588889 in words is "three hundred twenty billion, one hundred sixty-three million, five hundred eighty-eight thousand, eight hundred eighty-nine".