"An authoritative classic, the Kāngxī dictionary, lists over 47,000 characters. The Hanyu Da Zidian, a more modern reference, has over 54,000 characters; the Dai Kan-Wa Jiten, the Japanese equivalent, has over 50,000. Even more recently, the Zhōnghuá Zìhǎi has over 85,000 characters, but apparently many of those are variants.
Of course, such counting is more-or-less academic. In Japan, there are only 2,136 Jōyō kanji (lit. commonly-used kanji), which are the ones taught in school, though literate people usually know more. The equivalent list in Chinese is the Xiàndài Hànyǔ Chángyòng Zìbiǎo, which has about 3,500 characters."