66662435611 has 2 divisors, whose sum is σ = 66662435612. Its totient is φ = 66662435610.

The previous prime is 66662435573. The next prime is 66662435629. The reversal of 66662435611 is 11653426666.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66662435611 is a prime.

It is not a weakly prime, because it can be changed into another prime (66662435011) 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, 33331217805 + 33331217806.

It is an arithmetic number, because the mean of its divisors is an integer number (33331217806).

Almost surely, 2^66662435611 is an apocalyptic number.

66662435611 is a deficient number, since it is larger than the sum of its proper divisors (1).

66662435611 is an equidigital number, since it uses as much as digits as its factorization.

66662435611 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 933120, while the sum is 46.

The spelling of 66662435611 in words is "sixty-six billion, six hundred sixty-two million, four hundred thirty-five thousand, six hundred eleven".