5665548455666 has 8 divisors (see below), whose sum is σ = 9270897472944. Its totient is φ = 2575249298020.

The previous prime is 5665548455663. The next prime is 5665548455729. The reversal of 5665548455666 is 6665548455665.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 5665548455666.

It is not an unprimeable number, because it can be changed into a prime (5665548455663) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 128762464880 + ... + 128762464923.

It is an arithmetic number, because the mean of its divisors is an integer number (1158862184118).

Almost surely, 2^{5665548455666} is an apocalyptic number.

5665548455666 is a deficient number, since it is larger than the sum of its proper divisors (3605349017278).

5665548455666 is a wasteful number, since it uses less digits than its factorization.

5665548455666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257524929816.

The product of its digits is 3110400000, while the sum is 71.

Subtracting 5665548455666 from its reverse (6665548455665), we obtain a palindrome (999999999999).

The spelling of 5665548455666 in words is "five trillion, six hundred sixty-five billion, five hundred forty-eight million, four hundred fifty-five thousand, six hundred sixty-six".