66075311575579 has 2 divisors, whose sum is σ = 66075311575580. Its totient is φ = 66075311575578.

The previous prime is 66075311575547. The next prime is 66075311575591. The reversal of 66075311575579 is 97557511357066.

66075311575579 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 66075311575579 - 2⁵ = 66075311575547 is a prime.

It is not a weakly prime, because it can be changed into another prime (66075311572579) 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, 33037655787789 + 33037655787790.

It is an arithmetic number, because the mean of its divisors is an integer number (33037655787790).

Almost surely, 2^{66075311575579} is an apocalyptic number.

66075311575579 is a deficient number, since it is larger than the sum of its proper divisors (1).

66075311575579 is an equidigital number, since it uses as much as digits as its factorization.

66075311575579 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 208372500, while the sum is 67.

The spelling of 66075311575579 in words is "sixty-six trillion, seventy-five billion, three hundred eleven million, five hundred seventy-five thousand, five hundred seventy-nine".