5550655655665 has 4 divisors (see below), whose sum is σ = 6660786786804. Its totient is φ = 4440524524528.

The previous prime is 5550655655659. The next prime is 5550655655693. The reversal of 5550655655665 is 5665565560555.

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 1808067486736 + 3742588168929 = 1344644^2 + 1934577^2 .

It is a cyclic number.

It is not a de Polignac number, because 5550655655665 - 2³¹ = 5548508172017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5550655655597 and 5550655655606.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 555065565562 + ... + 555065565571.

It is an arithmetic number, because the mean of its divisors is an integer number (1665196696701).

Almost surely, 2^{5550655655665} is an apocalyptic number.

It is an amenable number.

5550655655665 is a deficient number, since it is larger than the sum of its proper divisors (1110131131139).

5550655655665 is a wasteful number, since it uses less digits than its factorization.

5550655655665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1110131131138.

The product of its (nonzero) digits is 506250000, while the sum is 64.

The spelling of 5550655655665 in words is "five trillion, five hundred fifty billion, six hundred fifty-five million, six hundred fifty-five thousand, six hundred sixty-five".