169025265161 has 2 divisors, whose sum is σ = 169025265162. Its totient is φ = 169025265160.

The previous prime is 169025265131. The next prime is 169025265193. The reversal of 169025265161 is 161562520961.

169025265161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 120214758400 + 48810506761 = 346720^2 + 220931^2 .

It is an emirp because it is prime and its reverse (161562520961) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-169025265161 is a prime.

It is not a weakly prime, because it can be changed into another prime (169025265131) 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, 84512632580 + 84512632581.

It is an arithmetic number, because the mean of its divisors is an integer number (84512632581).

Almost surely, 2^169025265161 is an apocalyptic number.

It is an amenable number.

169025265161 is a deficient number, since it is larger than the sum of its proper divisors (1).

169025265161 is an equidigital number, since it uses as much as digits as its factorization.

169025265161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 194400, while the sum is 44.

The spelling of 169025265161 in words is "one hundred sixty-nine billion, twenty-five million, two hundred sixty-five thousand, one hundred sixty-one".