66560616732199 has 2 divisors, whose sum is σ = 66560616732200. Its totient is φ = 66560616732198.

The previous prime is 66560616732089. The next prime is 66560616732317. The reversal of 66560616732199 is 99123761606566.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66560616732199 - 2²³ = 66560608343591 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66560616733199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33280308366099 + 33280308366100.

It is an arithmetic number, because the mean of its divisors is an integer number (33280308366100).

Almost surely, 2^{66560616732199} is an apocalyptic number.

66560616732199 is a deficient number, since it is larger than the sum of its proper divisors (1).

66560616732199 is an equidigital number, since it uses as much as digits as its factorization.

66560616732199 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 132269760, while the sum is 67.

The spelling of 66560616732199 in words is "sixty-six trillion, five hundred sixty billion, six hundred sixteen million, seven hundred thirty-two thousand, one hundred ninety-nine".