Several community-hosted directories provide ISO or executable files for Office 2016 Professional Plus (x64):
Microsoft Office 2016 is one of the most widely used productivity suites in the world, offering a range of applications such as Word, Excel, PowerPoint, and more. For users who require a 64-bit version of the software, Microsoft provides a 64-bit version of Office 2016 that can take advantage of the increased memory and processing power offered by 64-bit operating systems. index of ms office 2016 64 bit patched
is designed to handle larger data sets and more complex computations, particularly in Excel, by utilizing more system memory than the 32-bit counterpart. Microsoft Support Patched vs. Updated particularly in Excel