Numbers in reversed order

using System;
using System.Collections.Generic;
using System.Linq;

namespace _4.NumberInReversedOrder
{
    class Program
    {
        static void Main(string[] args)
        {

            string input = Console.ReadLine();
            int number = input.Length;
            int counter = 1;
            while (number !=0)
            {
                Console.Write(input[input.Length-counter]);
                number--;
                counter++;
            }
            Console.WriteLine();
        }
    }
}