66694795103 has 2 divisors, whose sum is σ = 66694795104. Its totient is φ = 66694795102.

The previous prime is 66694795099. The next prime is 66694795171. The reversal of 66694795103 is 30159749666.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66694795103 - 2² = 66694795099 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66694795003) 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, 33347397551 + 33347397552.

It is an arithmetic number, because the mean of its divisors is an integer number (33347397552).

Almost surely, 2^66694795103 is an apocalyptic number.

66694795103 is a deficient number, since it is larger than the sum of its proper divisors (1).

66694795103 is an equidigital number, since it uses as much as digits as its factorization.

66694795103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7348320, while the sum is 56.

The spelling of 66694795103 in words is "sixty-six billion, six hundred ninety-four million, seven hundred ninety-five thousand, one hundred three".