Centurioes to nanoseconds

using System;
using System.Collections.Generic;
using System.Linq;
using System.Numerics;
using System.Text;
using System.Threading.Tasks;

namespace Centuries_to_Nanoseconds
{
    class Program
    {
        static void Main()
        {
            int centuries = int.Parse(Console.ReadLine());

            int years = centuries * 100;
            ulong day = (ulong)(years*365.2422);
            ulong hours = day * 24;
            ulong minutes = hours * 60;
            ulong seconds = minutes * 60;
            ulong milliSeconds = seconds * 1000;
            BigInteger microSeconds = milliSeconds * 1000;
            BigInteger nanoSeconds = microSeconds * 1000;

            Console.WriteLine(
                "{0} centuries = {1} years = {2} days = {3} hours = {4} minutes = {5} seconds = {6} milliseconds = {7} microseconds = {8} nanoseconds",
                centuries,years,day,hours,minutes,seconds,milliSeconds,microSeconds,nanoSeconds);
        }
    }
}