The search term implies three specific desires:
Please be cautious when using third-party sources, as they may offer pirated or compromised versions of the software. That being said, if you're still looking for an "index of" listing:
The request for the "64-bit" version is not just a technical detail; it fundamentally changes the user experience for power users. Office 2016 was the version where the 64-bit release became a mainstream recommendation rather than a niche curiosity.
Use 64-bit if you work with enormous Excel files (data models, Power BI), massive PST archives, or need to address more than 2 GB of memory per app. Otherwise, 32-bit is safer for compatibility with old third-party add-ins.