55688822727665 has 4 divisors (see below), whose sum is σ = 66826587273204. Its totient is φ = 44551058182128.

The previous prime is 55688822727553. The next prime is 55688822727677. The reversal of 55688822727665 is 56672722888655.

55688822727665 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 16723462261489 + 38965360466176 = 4089433^2 + 6242224^2 .

It is a cyclic number.

It is not a de Polignac number, because 55688822727665 - 2²⁶ = 55688755618801 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 5568882272762 + ... + 5568882272771.

It is an arithmetic number, because the mean of its divisors is an integer number (16706646818301).

Almost surely, 2^{55688822727665} is an apocalyptic number.

It is an amenable number.

55688822727665 is a deficient number, since it is larger than the sum of its proper divisors (11137764545539).

55688822727665 is a wasteful number, since it uses less digits than its factorization.

55688822727665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11137764545538.

The product of its digits is 5419008000, while the sum is 77.

The spelling of 55688822727665 in words is "fifty-five trillion, six hundred eighty-eight billion, eight hundred twenty-two million, seven hundred twenty-seven thousand, six hundred sixty-five".