61 (the 18th prime)

 
Next prime67
Previous prime59
Octal(75)8
Hexadecimal(3D)16
Prime gap6
12th Sexy prime (the small number)The big number is 67 .
7th Prime of the Form 3n+172 + 3 * 22
8th Prime of the Form 4n+152 + 62
5th Euler prime number