5561550016666 has 16 divisors (see below), whose sum is σ = 9534308431104. Its totient is φ = 2383465763664.

The previous prime is 5561550016637. The next prime is 5561550016669. The reversal of 5561550016666 is 6666100551655.

It is not an unprimeable number, because it can be changed into a prime (5561550016669) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4015650 + ... + 5220013.

It is an arithmetic number, because the mean of its divisors is an integer number (595894276944).

Almost surely, 2^{5561550016666} is an apocalyptic number.

5561550016666 is a deficient number, since it is larger than the sum of its proper divisors (3972758414438).

5561550016666 is a wasteful number, since it uses less digits than its factorization.

5561550016666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9278685.

The product of its (nonzero) digits is 4860000, while the sum is 52.

The spelling of 5561550016666 in words is "five trillion, five hundred sixty-one billion, five hundred fifty million, sixteen thousand, six hundred sixty-six".