66059792717 has 2 divisors, whose sum is σ = 66059792718. Its totient is φ = 66059792716.

The previous prime is 66059792683. The next prime is 66059792731. The reversal of 66059792717 is 71729795066.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52560606121 + 13499186596 = 229261^2 + 116186^2 .

It is a cyclic number.

It is not a de Polignac number, because 66059792717 - 2¹² = 66059788621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66059792797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33029896358 + 33029896359.

It is an arithmetic number, because the mean of its divisors is an integer number (33029896359).

Almost surely, 2^66059792717 is an apocalyptic number.

It is an amenable number.

66059792717 is a deficient number, since it is larger than the sum of its proper divisors (1).

66059792717 is an equidigital number, since it uses as much as digits as its factorization.

66059792717 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10001880, while the sum is 59.

The spelling of 66059792717 in words is "sixty-six billion, fifty-nine million, seven hundred ninety-two thousand, seven hundred seventeen".