181711045045133 has 2 divisors, whose sum is σ = 181711045045134. Its totient is φ = 181711045045132.

The previous prime is 181711045045099. The next prime is 181711045045151. The reversal of 181711045045133 is 331540540117181.

181711045045133 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 134827814725444 + 46883230319689 = 11611538^2 + 6847133^2 .

It is a cyclic number.

It is not a de Polignac number, because 181711045045133 - 2⁸ = 181711045044877 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (181711045045183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90855522522566 + 90855522522567.

It is an arithmetic number, because the mean of its divisors is an integer number (90855522522567).

Almost surely, 2^{181711045045133} is an apocalyptic number.

It is an amenable number.

181711045045133 is a deficient number, since it is larger than the sum of its proper divisors (1).

181711045045133 is an equidigital number, since it uses as much as digits as its factorization.

181711045045133 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 201600, while the sum is 44.

The spelling of 181711045045133 in words is "one hundred eighty-one trillion, seven hundred eleven billion, forty-five million, forty-five thousand, one hundred thirty-three".