66407733179 has 2 divisors, whose sum is σ = 66407733180. Its totient is φ = 66407733178.

The previous prime is 66407733151. The next prime is 66407733187. The reversal of 66407733179 is 97133770466.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66407733179 - 2¹² = 66407729083 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 66407733179.

It is not a weakly prime, because it can be changed into another prime (66407733149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33203866589 + 33203866590.

It is an arithmetic number, because the mean of its divisors is an integer number (33203866590).

Almost surely, 2^66407733179 is an apocalyptic number.

66407733179 is a deficient number, since it is larger than the sum of its proper divisors (1).

66407733179 is an equidigital number, since it uses as much as digits as its factorization.

66407733179 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4000752, while the sum is 53.

The spelling of 66407733179 in words is "sixty-six billion, four hundred seven million, seven hundred thirty-three thousand, one hundred seventy-nine".