5566181201806 has 8 divisors (see below), whose sum is σ = 8372924131824. Its totient is φ = 2775206491200.

The previous prime is 5566181201747. The next prime is 5566181201939. The reversal of 5566181201806 is 6081021816655.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 5566181201806.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3942053970 + ... + 3942055381.

It is an arithmetic number, because the mean of its divisors is an integer number (1046615516478).

Almost surely, 2^{5566181201806} is an apocalyptic number.

5566181201806 is a deficient number, since it is larger than the sum of its proper divisors (2806742930018).

5566181201806 is a wasteful number, since it uses less digits than its factorization.

5566181201806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7884109706.

The product of its (nonzero) digits is 691200, while the sum is 49.

The spelling of 5566181201806 in words is "five trillion, five hundred sixty-six billion, one hundred eighty-one million, two hundred one thousand, eight hundred six".