2116917565 has 8 divisors (see below), whose sum is σ = 2903201280. Its totient is φ = 1451600592.

The previous prime is 2116917557. The next prime is 2116917577. The reversal of 2116917565 is 5657196112.

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

It is a cyclic number.

It is not a de Polignac number, because 2116917565 - 2³ = 2116917557 is a prime.

It is a congruent number.

It is an unprimeable number.

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, 30241645 + ... + 30241714.

It is an arithmetic number, because the mean of its divisors is an integer number (362900160).

Almost surely, 2^2116917565 is an apocalyptic number.

It is an amenable number.

2116917565 is a deficient number, since it is larger than the sum of its proper divisors (786283715).

2116917565 is an equidigital number, since it uses as much as digits as its factorization.

2116917565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60483371.

The product of its digits is 113400, while the sum is 43.

The square root of 2116917565 is about 46009.9724516327. The cubic root of 2116917565 is about 1284.0087466610.

It can be divided in two parts, 2116 and 917565, that added together give a square (919681 = 959²).

The spelling of 2116917565 in words is "two billion, one hundred sixteen million, nine hundred seventeen thousand, five hundred sixty-five".