66075330257819 has 2 divisors, whose sum is σ = 66075330257820. Its totient is φ = 66075330257818.

The previous prime is 66075330257779. The next prime is 66075330257837. The reversal of 66075330257819 is 91875203357066.

66075330257819 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 66075330257819 - 2¹⁶ = 66075330192283 is a prime.

It is a super-2 number, since 2×66075330257819² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (66075330253819) 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, 33037665128909 + 33037665128910.

It is an arithmetic number, because the mean of its divisors is an integer number (33037665128910).

Almost surely, 2^{66075330257819} is an apocalyptic number.

66075330257819 is a deficient number, since it is larger than the sum of its proper divisors (1).

66075330257819 is an equidigital number, since it uses as much as digits as its factorization.

66075330257819 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 57153600, while the sum is 62.

The spelling of 66075330257819 in words is "sixty-six trillion, seventy-five billion, three hundred thirty million, two hundred fifty-seven thousand, eight hundred nineteen".