2217166607165 has 16 divisors (see below), whose sum is σ = 2670999349248. Its totient is φ = 1766812330176.

The previous prime is 2217166607147. The next prime is 2217166607237. The reversal of 2217166607165 is 5617066617122.

It is a cyclic number.

It is not a de Polignac number, because 2217166607165 - 2¹⁸ = 2217166345021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 731402 + ... + 2229188.

It is an arithmetic number, because the mean of its divisors is an integer number (166937459328).

Almost surely, 2^{2217166607165} is an apocalyptic number.

It is an amenable number.

2217166607165 is a deficient number, since it is larger than the sum of its proper divisors (453832742083).

2217166607165 is a wasteful number, since it uses less digits than its factorization.

2217166607165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1498948.

The product of its (nonzero) digits is 1270080, while the sum is 50.

The spelling of 2217166607165 in words is "two trillion, two hundred seventeen billion, one hundred sixty-six million, six hundred seven thousand, one hundred sixty-five".