5665565665640 has 64 divisors (see below), whose sum is σ = 12788071344000. Its totient is φ = 2259022616320.

The previous prime is 5665565665637. The next prime is 5665565665649. The reversal of 5665565665640 is 465665655665.

It is not an unprimeable number, because it can be changed into a prime (5665565665649) 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, 36957950 + ... + 37110930.

It is an arithmetic number, because the mean of its divisors is an integer number (199813614750).

Almost surely, 2^{5665565665640} is an apocalyptic number.

It is an amenable number.

5665565665640 is an abundant number, since it is smaller than the sum of its proper divisors (7122505678360).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5665565665640 is a wasteful number, since it uses less digits than its factorization.

5665565665640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155930 (or 155926 counting only the distinct ones).

The product of its (nonzero) digits is 583200000, while the sum is 65.

The spelling of 5665565665640 in words is "five trillion, six hundred sixty-five billion, five hundred sixty-five million, six hundred sixty-five thousand, six hundred forty".