sumTotalTermFreq

The total number of tokens for this field , in the range [.sumDocFreq .. Long.MAX_VALUE]. This is the "word count" for this field across all documents. It is the sum of TermStatistics.totalTermFreq across all terms. It is also the sum of each document's field length across all documents.

This value is always a positive number, and always at least .sumDocFreq. @see Terms#getSumTotalTermFreq()