2116517217 has 16 divisors (see below), whose sum is σ = 2975607360. Its totient is φ = 1334472192.

The previous prime is 2116517213. The next prime is 2116517231. The reversal of 2116517217 is 7127156112.

It is not a de Polignac number, because 2116517217 - 2² = 2116517213 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2116517213) 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 15 ways as a sum of consecutive naturals, for example, 2493 + ... + 65109.

It is an arithmetic number, because the mean of its divisors is an integer number (185975460).

Almost surely, 2^2116517217 is an apocalyptic number.

It is an amenable number.

2116517217 is a deficient number, since it is larger than the sum of its proper divisors (859090143).

2116517217 is a wasteful number, since it uses less digits than its factorization.

2116517217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63232.

The product of its digits is 5880, while the sum is 33.

The square root of 2116517217 is about 46005.6215804112. The cubic root of 2116517217 is about 1283.9277983439.

The spelling of 2116517217 in words is "two billion, one hundred sixteen million, five hundred seventeen thousand, two hundred seventeen".