Get total page number in category products.

Hi I am working CategoryTemplate.ProductsInGridOrLines.cshtml page. I seen in this page there is a @pager and that's represents the number of this page. when i have many many products i cant see last number of the page. And i cant understand about Html.Pager . But if I get last number of the page I can use this on my way. So how can i do this. please help me.

@Model.PagingFilteringContext.TotalPages