How many people do you talk with on WhatsApp? Also, how many of those live in very very different geographical areas? I feel twitter’s graph has much more edges

How many people do you talk with on WhatsApp? Also, how many of those live in very very different geographical areas? I feel twitter’s graph has much more edges, and the nodes (users) can’t be partitioned as well. Also, Twitter does real-time data analysis, which is another of their money sources, and takes a huge amount of computing.