5665565660617 has 16 divisors (see below), whose sum is σ = 5742395802000. Its totient is φ = 5589222008832.

The previous prime is 5665565660603. The next prime is 5665565660663. The reversal of 5665565660617 is 7160665655665.

It can be written as a sum of positive squares in 8 ways, for example, as 4194320384016 + 1471245276601 = 2048004^2 + 1212949^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5665565660617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5665565660017) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 72339283 + ... + 72417559.

It is an arithmetic number, because the mean of its divisors is an integer number (358899737625).

Almost surely, 2^{5665565660617} is an apocalyptic number.

It is an amenable number.

5665565660617 is a deficient number, since it is larger than the sum of its proper divisors (76830141383).

5665565660617 is a wasteful number, since it uses less digits than its factorization.

5665565660617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81372.

The product of its (nonzero) digits is 204120000, while the sum is 64.

The spelling of 5665565660617 in words is "five trillion, six hundred sixty-five billion, five hundred sixty-five million, six hundred sixty thousand, six hundred seventeen".