5665565665639 has 8 divisors (see below), whose sum is σ = 6544182801168. Its totient is φ = 4847542815360.

The previous prime is 5665565665637. The next prime is 5665565665649. The reversal of 5665565665639 is 9365665655665.

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 5665565665639 - 2¹ = 5665565665637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5665565665633) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15148571112 + ... + 15148571485.

It is an arithmetic number, because the mean of its divisors is an integer number (818022850146).

Almost surely, 2^{5665565665639} is an apocalyptic number.

5665565665639 is a deficient number, since it is larger than the sum of its proper divisors (878617135529).

5665565665639 is a wasteful number, since it uses less digits than its factorization.

5665565665639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30297142625.

The product of its digits is 3936600000, while the sum is 73.

The spelling of 5665565665639 in words is "five trillion, six hundred sixty-five billion, five hundred sixty-five million, six hundred sixty-five thousand, six hundred thirty-nine".