What is the maximum size of a file in a data job?

Is there any limit on no of files that can be added in a data job?if yes, what is the limit.

And what is the size limit of each file in a datajob?

what is the overall file size limit in a data job?

Is there any limit on the size of files that can be processed using file listener ?if yes, what is the limit.

what is the overall file size limit in a filelistener?