Given my experience, it might be 45-70 full nodes in total with changing availability.
The nubits-seeder running on anton.coinerella.com (DNS seed list for NuDroid) has about 20-25 full nodes in its list, of which 10 will be listed in the DNS A records of nuseed.coinerella.com.
That software is quite restrictive though, in terms of which nodes it considers to be reliable and which not.
I’ve thinned that list out even further, removing all nodes not running on standard ports.
tl; dr: Yes, our node count is not very high.