The term "Portable Win64 Full" suggests that this is a portable (i.e., can be run from a USB drive or other portable storage device) and complete (i.e., full-featured) version of Autodesk Inventor 2015 for 64-bit Windows systems.
: Students and educators can often access software through the Autodesk Education Community , though the versions offered are typically the most recent releases. autodesk inventor 2015 portable win64 full