550606556666 has 16 divisors (see below), whose sum is σ = 840454278048. Its totient is φ = 270496746000.

The previous prime is 550606556659. The next prime is 550606556719. The reversal of 550606556666 is 666655606055.

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, 10377260 + ... + 10430183.

It is an arithmetic number, because the mean of its divisors is an integer number (52528392378).

Almost surely, 2^550606556666 is an apocalyptic number.

550606556666 is a deficient number, since it is larger than the sum of its proper divisors (289847721382).

550606556666 is a wasteful number, since it uses less digits than its factorization.

550606556666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20807677.

The product of its (nonzero) digits is 29160000, while the sum is 56.

The spelling of 550606556666 in words is "five hundred fifty billion, six hundred six million, five hundred fifty-six thousand, six hundred sixty-six".