66066714377 has 2 divisors, whose sum is σ = 66066714378. Its totient is φ = 66066714376.

The previous prime is 66066714347. The next prime is 66066714379. The reversal of 66066714377 is 77341766066.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48257544976 + 17809169401 = 219676^2 + 133451^2 .

It is a cyclic number.

It is not a de Polignac number, because 66066714377 - 2⁸ = 66066714121 is a prime.

Together with 66066714379, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (66066714379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33033357188 + 33033357189.

It is an arithmetic number, because the mean of its divisors is an integer number (33033357189).

Almost surely, 2^66066714377 is an apocalyptic number.

It is an amenable number.

66066714377 is a deficient number, since it is larger than the sum of its proper divisors (1).

66066714377 is an equidigital number, since it uses as much as digits as its factorization.

66066714377 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5334336, while the sum is 53.

The spelling of 66066714377 in words is "sixty-six billion, sixty-six million, seven hundred fourteen thousand, three hundred seventy-seven".