5665565660511 has 4 divisors (see below), whose sum is σ = 7554087547352. Its totient is φ = 3777043773672.

The previous prime is 5665565660477. The next prime is 5665565660519. The reversal of 5665565660511 is 1150665655665.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-5665565660511 is a prime.

It is a super-2 number, since 2×5665565660511² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5665565660519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 944260943416 + ... + 944260943421.

It is an arithmetic number, because the mean of its divisors is an integer number (1888521886838).

Almost surely, 2^{5665565660511} is an apocalyptic number.

5665565660511 is a deficient number, since it is larger than the sum of its proper divisors (1888521886841).

5665565660511 is a wasteful number, since it uses less digits than its factorization.

5665565660511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1888521886840.

The product of its (nonzero) digits is 24300000, while the sum is 57.

The spelling of 5665565660511 in words is "five trillion, six hundred sixty-five billion, five hundred sixty-five million, six hundred sixty thousand, five hundred eleven".