Mazy's Muddle: Dracula has a fangache!

Mazy's Muddle: Dracula has a fangache!

 “Am reading about maths, Ma!” I said. Yes, really, I was. You know how you come across interesting stuff on the Internet. And I had just found something about vampire numbers in a blog called ‘Fascinating Facts Of Mathematics’.

A ‘vampire number’ is a number which can be written as a product of two numbers having the same digits the same number of times as the vampire number.
For example, 1827 can be written as a product of two numbers 21 and 87. 1827 = 21 x 87. Here 21 and 87 are called fangs.

I tried to see if I could discover other vampire numbers on my own....but...ouch...maybe answers would come in my dream, I thought!

So I went to sleep, and dreamt that Mr Dracula had a fangache. In my sleep, I counted Mr Dracula’s upper teeth...16 of them. They were perfectly symmetrical. The sixth tooth was his fang. What is the serial number of his second fang? You see, I can’t remember...
Out of the maze:

If the first fang is sixth from one side of his mouth, the other fang must be sixth from the opposite end. That’s sixth counting back from 16. Serial number 11.

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