66220150699 has 2 divisors, whose sum is σ = 66220150700. Its totient is φ = 66220150698.

The previous prime is 66220150603. The next prime is 66220150721. The reversal of 66220150699 is 99605102266.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66220150699 - 2¹⁷ = 66220019627 is a prime.

It is not a weakly prime, because it can be changed into another prime (66220550699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33110075349 + 33110075350.

It is an arithmetic number, because the mean of its divisors is an integer number (33110075350).

Almost surely, 2^66220150699 is an apocalyptic number.

66220150699 is a deficient number, since it is larger than the sum of its proper divisors (1).

66220150699 is an equidigital number, since it uses as much as digits as its factorization.

66220150699 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 349920, while the sum is 46.

The spelling of 66220150699 in words is "sixty-six billion, two hundred twenty million, one hundred fifty thousand, six hundred ninety-nine".