I'd suggest that to split a large spatial data set, you tile it. As @Hans van der Maarel alluded to, you may not need it to be geographicalyl contiguous, but there are massive benefits of having the data in a constrained spatial extent
@Abinash Rout You can use the ModuloCounter - set the Count Maximum to six. Then out the output feature type, for the Shapefile Name, use the Text editor to add the count as a suffix: