66042893706277 has 2 divisors, whose sum is σ = 66042893706278. Its totient is φ = 66042893706276.

The previous prime is 66042893706263. The next prime is 66042893706281. The reversal of 66042893706277 is 77260739824066.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 61820337233281 + 4222556472996 = 7862591^2 + 2054886^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66042893706277 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66042893706677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33021446853138 + 33021446853139.

It is an arithmetic number, because the mean of its divisors is an integer number (33021446853139).

Almost surely, 2^{66042893706277} is an apocalyptic number.

It is an amenable number.

66042893706277 is a deficient number, since it is larger than the sum of its proper divisors (1).

66042893706277 is an equidigital number, since it uses as much as digits as its factorization.

66042893706277 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 256048128, while the sum is 67.

The spelling of 66042893706277 in words is "sixty-six trillion, forty-two billion, eight hundred ninety-three million, seven hundred six thousand, two hundred seventy-seven".