18411058365173 has 2 divisors, whose sum is σ = 18411058365174. Its totient is φ = 18411058365172.

The previous prime is 18411058365127. The next prime is 18411058365187. The reversal of 18411058365173 is 37156385011481.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18320813999524 + 90244365649 = 4280282^2 + 300407^2 .

It is a cyclic number.

It is not a de Polignac number, because 18411058365173 - 2⁸ = 18411058364917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18411058365373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9205529182586 + 9205529182587.

It is an arithmetic number, because the mean of its divisors is an integer number (9205529182587).

Almost surely, 2^{18411058365173} is an apocalyptic number.

It is an amenable number.

18411058365173 is a deficient number, since it is larger than the sum of its proper divisors (1).

18411058365173 is an equidigital number, since it uses as much as digits as its factorization.

18411058365173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2419200, while the sum is 53.

The spelling of 18411058365173 in words is "eighteen trillion, four hundred eleven billion, fifty-eight million, three hundred sixty-five thousand, one hundred seventy-three".