65066056550171 has 2 divisors, whose sum is σ = 65066056550172. Its totient is φ = 65066056550170.

The previous prime is 65066056550161. The next prime is 65066056550251. The reversal of 65066056550171 is 17105565066056.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 65066056550171 - 2²² = 65066052355867 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (65066056550161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32533028275085 + 32533028275086.

It is an arithmetic number, because the mean of its divisors is an integer number (32533028275086).

Almost surely, 2^{65066056550171} is an apocalyptic number.

65066056550171 is a deficient number, since it is larger than the sum of its proper divisors (1).

65066056550171 is an equidigital number, since it uses as much as digits as its factorization.

65066056550171 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5670000, while the sum is 53.

The spelling of 65066056550171 in words is "sixty-five trillion, sixty-six billion, fifty-six million, five hundred fifty thousand, one hundred seventy-one".