550616616666 has 12 divisors (see below), whose sum is σ = 1193002669482. Its totient is φ = 183538872216.

The previous prime is 550616616643. The next prime is 550616616679. The reversal of 550616616666 is 666616616055.

It can be written as a sum of positive squares in only one way, i.e., 475748165025 + 74868451641 = 689745^2 + 273621^2 .

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

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 5 ways as a sum of consecutive naturals, for example, 15294906001 + ... + 15294906036.

Almost surely, 2^550616616666 is an apocalyptic number.

550616616666 is an abundant number, since it is smaller than the sum of its proper divisors (642386052816).

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

550616616666 is a wasteful number, since it uses less digits than its factorization.

550616616666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30589812045 (or 30589812042 counting only the distinct ones).

The product of its (nonzero) digits is 6998400, while the sum is 54.

The spelling of 550616616666 in words is "five hundred fifty billion, six hundred sixteen million, six hundred sixteen thousand, six hundred sixty-six".