According to the service 1ML, currently the number of active nodes in the network of bitcoin is 4039.
These nodes transmit for 12 511 payment channels in total 135,76 BTC (over $760 thousand). On average, one node has 11 channels. The median fee is 1 Satoshi.
Note that in August the number of active Lightning nod was 3000.
ForkLog previously reported that the introduction of the Lightning Network are seriously interested in the project Stellar.