66065295171 has 8 divisors (see below), whose sum is σ = 88097410240. Its totient is φ = 44038355112.

The previous prime is 66065295169. The next prime is 66065295173. The reversal of 66065295171 is 17159256066.

It is an interprime number because it is at equal distance from previous prime (66065295169) and next prime (66065295173).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 66065295171 - 2¹ = 66065295169 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 66065295171.

It is not an unprimeable number, because it can be changed into a prime (66065295173) 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 in 7 ways as a sum of consecutive naturals, for example, 1263865 + ... + 1315098.

It is an arithmetic number, because the mean of its divisors is an integer number (11012176280).

Almost surely, 2^66065295171 is an apocalyptic number.

66065295171 is a deficient number, since it is larger than the sum of its proper divisors (22032115069).

66065295171 is a wasteful number, since it uses less digits than its factorization.

66065295171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2587505.

The product of its (nonzero) digits is 680400, while the sum is 48.

The spelling of 66065295171 in words is "sixty-six billion, sixty-five million, two hundred ninety-five thousand, one hundred seventy-one".