66654237179 has 2 divisors, whose sum is σ = 66654237180. Its totient is φ = 66654237178.

The previous prime is 66654237163. The next prime is 66654237203. The reversal of 66654237179 is 97173245666.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66654237179 - 2⁴ = 66654237163 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (66654237479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33327118589 + 33327118590.

It is an arithmetic number, because the mean of its divisors is an integer number (33327118590).

Almost surely, 2^66654237179 is an apocalyptic number.

66654237179 is a deficient number, since it is larger than the sum of its proper divisors (1).

66654237179 is an equidigital number, since it uses as much as digits as its factorization.

66654237179 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11430720, while the sum is 56.

The spelling of 66654237179 in words is "sixty-six billion, six hundred fifty-four million, two hundred thirty-seven thousand, one hundred seventy-nine".