Libertas - William Henry Harrison was the shortest time in office. But he was not the president with the shortest inaugural address and neither was Calvin Coolidge.
Septugenarian - The current white house occupant was not the longest.
William Henry Harrison was the longest - his address was given on a terrible day, cold sleet,snow - he was not wearing a top coat, just suit and tie -when he went on and on. Caught cold, it turned to pneumonia and he died 30 days later.
The shortest was George Washington for his second term.
William H. Harrison ---- 8,445 words [longest]
George Washington ---- 135 words for 2nd term