5655406045566 has 16 divisors (see below), whose sum is σ = 11310973766784. Its totient is φ = 1885108402584.

The previous prime is 5655406045507. The next prime is 5655406045567. The reversal of 5655406045566 is 6655406045565.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5655406045567) 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 7 ways as a sum of consecutive naturals, for example, 6279360 + ... + 7123283.

It is an arithmetic number, because the mean of its divisors is an integer number (706935860424).

Almost surely, 2^{5655406045566} is an apocalyptic number.

5655406045566 is an abundant number, since it is smaller than the sum of its proper divisors (5655567721218).

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

5655406045566 is a wasteful number, since it uses less digits than its factorization.

5655406045566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13472975.

The product of its (nonzero) digits is 64800000, while the sum is 57.

Subtracting 5655406045566 from its reverse (6655406045565), we obtain a palindrome (999999999999).

The spelling of 5655406045566 in words is "five trillion, six hundred fifty-five billion, four hundred six million, forty-five thousand, five hundred sixty-six".