For research-heavy "land" and "number" data, organizations like the U.S. Geological Survey (USGS) provide bulk downloads of observations, which include massive datasets on land cover and elevation. Landsat Data Access | U.S. Geological Survey - USGS.gov
Sites like EduRev offer downloadable PDFs (which can be zipped for storage) that illustrate place values like lakhs and crores. Download Land Big Numbers zip
For scientific contexts, large numbers are often simplified using exponents (e.g., 10910 to the nineth power For research-heavy "land" and "number" data