If it is real, which I think it is, it's a Mammillaria (or maybe a Cochemiea after the recent renaming, but probably not) and a pretty spectacular old plant. It looks like a cell phone picture, not the latest model and possibly suffering from compression artefact, or digitally zoomed.
In my attempts at AI images (pretty limited and pretty bad) the model does not appreciate species to species differences in cactuses, let alone differences between genera. I don't think they were trained on a library of botanical images, and so the depictions of cacti mix different features that don't typically occur together in nature. Cactus-like and maybe good enough to fool someone who hasn't seen 10 or 50 different kinds of cacti in bloom.
In this case, the things that say Mammillaria to me: the flowers in a ring below the apex of each stem, the tubercles, the wool, the shape of the stems and their dangling habit (in old age). I have a Mammillaria which has yellowish spines (when young) that similarly age to gray or white not long after those areoles flower. I have seen pictures of Mammillarias growing on top of other plants, or on rock faces or whatever, and some of them will tend to dangle.
Stefan.
