66542052222827 has 2 divisors, whose sum is σ = 66542052222828. Its totient is φ = 66542052222826.

The previous prime is 66542052222749. The next prime is 66542052222839. The reversal of 66542052222827 is 72822225024566.

66542052222827 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66542052222827 - 2⁸ = 66542052222571 is a prime.

It is not a weakly prime, because it can be changed into another prime (66542052222227) 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, 33271026111413 + 33271026111414.

It is an arithmetic number, because the mean of its divisors is an integer number (33271026111414).

Almost surely, 2^{66542052222827} is an apocalyptic number.

66542052222827 is a deficient number, since it is larger than the sum of its proper divisors (1).

66542052222827 is an equidigital number, since it uses as much as digits as its factorization.

66542052222827 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12902400, while the sum is 53.

The spelling of 66542052222827 in words is "sixty-six trillion, five hundred forty-two billion, fifty-two million, two hundred twenty-two thousand, eight hundred twenty-seven".