66041700511 has 2 divisors, whose sum is σ = 66041700512. Its totient is φ = 66041700510.

The previous prime is 66041700479. The next prime is 66041700583. The reversal of 66041700511 is 11500714066.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66041700511 - 2⁵ = 66041700479 is a prime.

It is a super-2 number, since 2×66041700511² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66041701511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33020850255 + 33020850256.

It is an arithmetic number, because the mean of its divisors is an integer number (33020850256).

Almost surely, 2^66041700511 is an apocalyptic number.

66041700511 is a deficient number, since it is larger than the sum of its proper divisors (1).

66041700511 is an equidigital number, since it uses as much as digits as its factorization.

66041700511 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5040, while the sum is 31.

The spelling of 66041700511 in words is "sixty-six billion, forty-one million, seven hundred thousand, five hundred eleven".