How to access protected lastPage property from result set

I am using laravel 4.2 and for some reason i need to access the lastPage property in my view which I failed. Here is the code of my controller when paginating.

$products = Product::where('status', '=', 'available')->paginate(20);

Below is a part of var_dump($products) in my view file and i need to know how to access it the correct way.

  protected 'total' => int 10491
  protected 'hasMore' => null
  protected 'perPage' => int 20
  protected 'currentPage' => int 1
  protected 'lastPage' => int 525
  protected 'from' => int 1
  protected 'to' => int 20