This question is really difficult ~ The following are just some random guesses, which may not be right, but I hope it will inspire you ~

The 7 in the prompt should mean that the word has 7 letters;

0 1~26 means that in a number string between 0 1~26, two numbers consisting of two adjacent numbers are extracted to form a word;

The prompt of 1/2 is too vague. It may be that the whole number string is divided by 2, or the extracted two digits are divided by 2 respectively.

Reversing this number twice should be written twice, that is, 2910161900 29101900;

Then let's take 1/2 as14550809501455080950;

Extract the adjacent two digits between 0 1~26:

14; 08; 09; 0 1; 14; 08; 09; (There are exactly seven)

Corresponding to the alphabet is:

Nyanxi

Obviously, this is not an English word in the dictionary, but is it the problem itself or a non-existent word?

I hope it helps you.