Adriassophobia Fear of the number 627,780,191.
Centumgigaphobia Fear of 100,000,000,000 .
Centummegaphobia Fear of 100,000,000 .
Centummillephobia Fear of 100,000 .
Centumteraphobia Fear of 100,000,000,000,000 .
Decemgigaphobia Fear of 10,000,000,000 .
Decemmegaphobia Fear of 10,000,000 .
Decemmillephobia Fear of 10,000 .
Decemteraphobia Fear of 10,000,000,000,000 .
Exaphobia Fear of the number 1,000,000,000,000,000,000 .
Gigaphobia Fear of the number 1,000,000,000 .
Meganumerophobia Fear of large numbers
Megaphobia Fear of the number 1,000,000 .
Teraphobia Fear of the number 1,000,000,000,000 .
Tessarakontadyochilahexekontenneaphobia Fear of number 42069
Tessarakontadyochilexintaphobia Fear of 42069 .
Yottaphobia Fear of the number 1,000,000,000,000,000,000,000,000 .
Zettaphobia Fear of the number 1,000,000,000,000,000,000,000 .