Finding and downloading a specific image with a long numeric filename like "IMG 16681309726214132.jpg" generally involves using browser developer tools or bulk downloaders if the direct link isn't immediately obvious.
: Press F12 or Ctrl + Shift + I (Windows/Linux) or Cmd + Option + I (Mac) on the webpage where the image is hosted.
: Search for "16681309726214132" in the filter box. If the image is loaded on the page, its specific URL will appear.
If you know the filename but can't find the image on a page, use the tab to locate the source URL.
: Select the Network tab and filter for Img (Images).