66324427012177 has 2 divisors, whose sum is σ = 66324427012178. Its totient is φ = 66324427012176.

The previous prime is 66324427012163. The next prime is 66324427012187. The reversal of 66324427012177 is 77121072442366.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43333466489856 + 22990960522321 = 6582816^2 + 4794889^2 .

It is a cyclic number.

It is not a de Polignac number, because 66324427012177 - 2²⁷ = 66324292794449 is a prime.

It is not a weakly prime, because it can be changed into another prime (66324427012117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33162213506088 + 33162213506089.

It is an arithmetic number, because the mean of its divisors is an integer number (33162213506089).

Almost surely, 2^{66324427012177} is an apocalyptic number.

It is an amenable number.

66324427012177 is a deficient number, since it is larger than the sum of its proper divisors (1).

66324427012177 is an equidigital number, since it uses as much as digits as its factorization.

66324427012177 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4741632, while the sum is 52.

The spelling of 66324427012177 in words is "sixty-six trillion, three hundred twenty-four billion, four hundred twenty-seven million, twelve thousand, one hundred seventy-seven".