170011155161161 has 2 divisors, whose sum is σ = 170011155161162. Its totient is φ = 170011155161160.

The previous prime is 170011155161147. The next prime is 170011155161189. The reversal of 170011155161161 is 161161551110071.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 157166815951161 + 12844339210000 = 12536619^2 + 3583900^2 .

It is an emirp because it is prime and its reverse (161161551110071) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 170011155161161 - 2⁴¹ = 167812131905609 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 170011155161161.

It is not a weakly prime, because it can be changed into another prime (170011155161261) by changing a digit.

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 as a sum of consecutive naturals, namely, 85005577580580 + 85005577580581.

It is an arithmetic number, because the mean of its divisors is an integer number (85005577580581).

Almost surely, 2^{170011155161161} is an apocalyptic number.

It is an amenable number.

170011155161161 is a deficient number, since it is larger than the sum of its proper divisors (1).

170011155161161 is an equidigital number, since it uses as much as digits as its factorization.

170011155161161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6300, while the sum is 37.

The spelling of 170011155161161 in words is "one hundred seventy trillion, eleven billion, one hundred fifty-five million, one hundred sixty-one thousand, one hundred sixty-one".