noun
total number; aggregate count
Refers to the sum or total count of items, people, or numerical values. Often used in reports, statistics, and formal contexts.
参加者の合計数は200人でした。
The total number of participants was 200.
各項目の合計数を計算してください。
Please calculate the total number for each item.
総数 also means 'total number' but is often used in more formal or statistical contexts.
Compound of 合計 (ごうけい, 'total') and 数 (すう, 'number').