8188055805561 has 16 divisors (see below), whose sum is σ = 11104821094080. Its totient is φ = 5365774843200.

The previous prime is 8188055805529. The next prime is 8188055805571. The reversal of 8188055805561 is 1655085508818.

It is not a de Polignac number, because 8188055805561 - 2⁵ = 8188055805529 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8188055805495 and 8188055805504.

It is not an unprimeable number, because it can be changed into a prime (8188055805571) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 97163950 + ... + 97248183.

It is an arithmetic number, because the mean of its divisors is an integer number (694051318380).

Almost surely, 2^{8188055805561} is an apocalyptic number.

It is an amenable number.

8188055805561 is a deficient number, since it is larger than the sum of its proper divisors (2916765288519).

8188055805561 is a wasteful number, since it uses less digits than its factorization.

8188055805561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194412376.

The product of its (nonzero) digits is 15360000, while the sum is 60.

The spelling of 8188055805561 in words is "eight trillion, one hundred eighty-eight billion, fifty-five million, eight hundred five thousand, five hundred sixty-one".