Back 80 (ахыԥхьаӡара) Abkhazian 80 (عدد) Arabic 80 (ədəd) Azerbaijani ۸۰ (سایی) AZB 80 (число) Bulgarian ༨༠ (གྲངས་ཀ།) Tibetan Vuitanta Catalan 80 CDO ٨٠ (ژمارە) CKB 80 (číslo) Czech
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| Cardinal | eighty | |||
| Ordinal | 80th (eightieth) | |||
| Factorization | 24 × 5 | |||
| Divisors | 1, 2, 4, 5, 8, 10, 16, 20, 40, 80 | |||
| Greek numeral | Π´ | |||
| Roman numeral | LXXX | |||
| Binary | 10100002 | |||
| Ternary | 22223 | |||
| Senary | 2126 | |||
| Octal | 1208 | |||
| Duodecimal | 6812 | |||
| Hexadecimal | 5016 | |||
| Armenian | Ձ | |||
| Hebrew | פ / ף | |||
| Babylonian numeral | 𒐕⟪ | |||
| Egyptian hieroglyph | 𓎍 | |||
80 (eighty) is the natural number following 79 and preceding 81.