To change the currency format in a report you can change the language of the report to reflect your target language.

I am not sure what the indian currency format would be but there are most major language groups in there so have a look.

As for changing number to print words, you will have to do this manually either through nested replace statements in the query or textboc property, or even better would be to have a cacluated column or view on you source sql that does the conversion,