5665660511565 has 16 divisors (see below), whose sum is σ = 9094204918656. Its totient is φ = 3011969572800.

The previous prime is 5665660511561. The next prime is 5665660511569. The reversal of 5665660511565 is 5651150665665.

It is an interprime number because it is at equal distance from previous prime (5665660511561) and next prime (5665660511569).

It is not a de Polignac number, because 5665660511565 - 2² = 5665660511561 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5665660511561) 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, 607247266 + ... + 607256595.

It is an arithmetic number, because the mean of its divisors is an integer number (568387807416).

Almost surely, 2^{5665660511565} is an apocalyptic number.

It is an amenable number.

5665660511565 is a deficient number, since it is larger than the sum of its proper divisors (3428544407091).

5665660511565 is a wasteful number, since it uses less digits than its factorization.

5665660511565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1214504180.

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

The spelling of 5665660511565 in words is "five trillion, six hundred sixty-five billion, six hundred sixty million, five hundred eleven thousand, five hundred sixty-five".