2066215122017 has 8 divisors (see below), whose sum is σ = 2188387909800. Its totient is φ = 1944112414464.

The previous prime is 2066215121969. The next prime is 2066215122043. The reversal of 2066215122017 is 7102215126602.

It can be written as a sum of positive squares in 4 ways, for example, as 122235136 + 2066092886881 = 11056^2 + 1437391^2 .

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

It is not a de Polignac number, because 2066215122017 - 2⁶ = 2066215121953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2066215022017) 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, 17459342 + ... + 17577287.

It is an arithmetic number, because the mean of its divisors is an integer number (273548488725).

Almost surely, 2^{2066215122017} is an apocalyptic number.

It is an amenable number.

2066215122017 is a deficient number, since it is larger than the sum of its proper divisors (122172787783).

2066215122017 is a wasteful number, since it uses less digits than its factorization.

2066215122017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35040115.

The product of its (nonzero) digits is 20160, while the sum is 35.

The spelling of 2066215122017 in words is "two trillion, sixty-six billion, two hundred fifteen million, one hundred twenty-two thousand, seventeen".