66065116610571 has 8 divisors (see below), whose sum is σ = 94862731543440. Its totient is φ = 40655456375712.

The previous prime is 66065116610569. The next prime is 66065116610611. The reversal of 66065116610571 is 17501661156066.

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

It is not a de Polignac number, because 66065116610571 - 2¹ = 66065116610569 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66065116614571) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 846988674456 + ... + 846988674533.

It is an arithmetic number, because the mean of its divisors is an integer number (11857841442930).

Almost surely, 2^{66065116610571} is an apocalyptic number.

66065116610571 is a deficient number, since it is larger than the sum of its proper divisors (28797614932869).

66065116610571 is a wasteful number, since it uses less digits than its factorization.

66065116610571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1693977349005.

The product of its (nonzero) digits is 1360800, while the sum is 51.

The spelling of 66065116610571 in words is "sixty-six trillion, sixty-five billion, one hundred sixteen million, six hundred ten thousand, five hundred seventy-one".