Find factorial for number which are larger than 64 bit in java

import java.io.*;
import java.util.*;
import java.text.*;
import java.math.*;
import java.util.regex.*;

public class Solution {

    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        BigInteger big = new BigInteger(String.valueOf(in.nextInt()));
        System.out.println(factorial(big));
    }
   
    static BigInteger factorial(BigInteger n){
        if(n == BigInteger.ONE || n== BigInteger.ZERO)
            return BigInteger.ONE;
        else
            return n.multiply(factorial(n.subtract(BigInteger.ONE)));
    }
}