320427309495863 has 2 divisors, whose sum is σ = 320427309495864. Its totient is φ = 320427309495862.

The previous prime is 320427309495847. The next prime is 320427309495929. The reversal of 320427309495863 is 368594903724023.

It is a weak prime.

It is an emirp because it is prime and its reverse (368594903724023) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 320427309495863 - 2⁴ = 320427309495847 is a prime.

It is a super-2 number, since 2×320427309495863² (a number of 30 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 320427309495863.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320427309495823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160213654747931 + 160213654747932.

It is an arithmetic number, because the mean of its divisors is an integer number (160213654747932).

Almost surely, 2^{320427309495863} is an apocalyptic number.

320427309495863 is a deficient number, since it is larger than the sum of its proper divisors (1).

320427309495863 is an equidigital number, since it uses as much as digits as its factorization.

320427309495863 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 235146240, while the sum is 65.

The spelling of 320427309495863 in words is "three hundred twenty trillion, four hundred twenty-seven billion, three hundred nine million, four hundred ninety-five thousand, eight hundred sixty-three".