How to check 64-bit version of NIS is installed?

Hello,

I now have a 64-bit machine instead of the old 32-bit PC (which is no longer in use).

I am using the same subscription as before, but how can I check I now have the correct 64-bit version of the software installed instead of the 32-bit version? (Much of the current software was restored from backups of the old 32-bit machine).

Many thanks!