320544443443963 has 2 divisors, whose sum is σ = 320544443443964. Its totient is φ = 320544443443962.

The previous prime is 320544443443943. The next prime is 320544443443999. The reversal of 320544443443963 is 369344344445023.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-320544443443963 is a prime.

It is a super-2 number, since 2×320544443443963² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 320544443443898 and 320544443443907.

It is not a weakly prime, because it can be changed into another prime (320544443443933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160272221721981 + 160272221721982.

It is an arithmetic number, because the mean of its divisors is an integer number (160272221721982).

Almost surely, 2^{320544443443963} is an apocalyptic number.

320544443443963 is a deficient number, since it is larger than the sum of its proper divisors (1).

320544443443963 is an equidigital number, since it uses as much as digits as its factorization.

320544443443963 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 179159040, while the sum is 58.

Adding to 320544443443963 its reverse (369344344445023), we get a palindrome (689888787888986).

The spelling of 320544443443963 in words is "three hundred twenty trillion, five hundred forty-four billion, four hundred forty-three million, four hundred forty-three thousand, nine hundred sixty-three".