5511110055181 has 2 divisors, whose sum is σ = 5511110055182. Its totient is φ = 5511110055180.

The previous prime is 5511110055173. The next prime is 5511110055247. The reversal of 5511110055181 is 1815500111155.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4079895015625 + 1431215039556 = 2019875^2 + 1196334^2 .

It is a cyclic number.

It is not a de Polignac number, because 5511110055181 - 2³ = 5511110055173 is a prime.

It is a super-2 number, since 2×5511110055181² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5511110055481) by changing a digit.

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 as a sum of consecutive naturals, namely, 2755555027590 + 2755555027591.

It is an arithmetic number, because the mean of its divisors is an integer number (2755555027591).

Almost surely, 2^{5511110055181} is an apocalyptic number.

It is an amenable number.

5511110055181 is a deficient number, since it is larger than the sum of its proper divisors (1).

5511110055181 is an equidigital number, since it uses as much as digits as its factorization.

5511110055181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5000, while the sum is 34.

The spelling of 5511110055181 in words is "five trillion, five hundred eleven billion, one hundred ten million, fifty-five thousand, one hundred eighty-one".