77

Number
$77$ (seventy-seven) is:
 * $7 \times 11$


 * The $26$th semiprime:
 * $77 = 7 \times 11$


 * The largest positive integer which cannot be expressed as the sum of positive integers whose reciprocals add up to $1$.


 * The smallest (positive) integer which requires $5$ syllables to say it in the English language:
 * sev-en-ty-sev-en

Also see

 * Positive Integers Expressible by Sum of Integers whose Reciprocals Sum to 1