5550561668 has 12 divisors (see below), whose sum is σ = 9858460752. Its totient is φ = 2733858600.

The previous prime is 5550561661. The next prime is 5550561677. The reversal of 5550561668 is 8661650555.

It is not an unprimeable number, because it can be changed into a prime (5550561661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10355258 + ... + 10355793.

It is an arithmetic number, because the mean of its divisors is an integer number (821538396).

Almost surely, 2^5550561668 is an apocalyptic number.

It is an amenable number.

5550561668 is a deficient number, since it is larger than the sum of its proper divisors (4307899084).

5550561668 is a wasteful number, since it uses less digits than its factorization.

5550561668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20711122 (or 20711120 counting only the distinct ones).

The product of its (nonzero) digits is 1080000, while the sum is 47.

The square root of 5550561668 is about 74502.0917021797. The cubic root of 5550561668 is about 1770.5667764752.

The spelling of 5550561668 in words is "five billion, five hundred fifty million, five hundred sixty-one thousand, six hundred sixty-eight".