Version 16.16.x is 64-bit , meaning it is compatible with modern macOS versions like macOS Sequoia that do not support older 32-bit applications.
Build 16.16.x was the final series for Office 2016. Updates higher than 16.16 (e.g., 16.17+) require an Office 2019 or newer license. Core Features & Performance Microsoft Office 2016 16.16.12 VL
Introduced the "Ribbon" design and full support for Retina Displays , making the UI much sharper and more consistent with other Mac apps. Version 16