550055666665 has 8 divisors (see below), whose sum is σ = 672520890888. Its totient is φ = 431741806080.

The previous prime is 550055666651. The next prime is 550055666717. The reversal of 550055666665 is 566666550055.

It can be written as a sum of positive squares in 4 ways, for example, as 13100862681 + 536954803984 = 114459^2 + 732772^2 .

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

It is not a de Polignac number, because 550055666665 - 2²⁹ = 549518795753 is a prime.

It is a super-2 number, since 2×550055666665² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1037840616 + ... + 1037841145.

It is an arithmetic number, because the mean of its divisors is an integer number (84065111361).

Almost surely, 2^550055666665 is an apocalyptic number.

It is an amenable number.

550055666665 is a deficient number, since it is larger than the sum of its proper divisors (122465224223).

550055666665 is a wasteful number, since it uses less digits than its factorization.

550055666665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2075681819.

The product of its (nonzero) digits is 24300000, while the sum is 55.

The spelling of 550055666665 in words is "five hundred fifty billion, fifty-five million, six hundred sixty-six thousand, six hundred sixty-five".