28170162246209 has 2 divisors, whose sum is σ = 28170162246210. Its totient is φ = 28170162246208.

The previous prime is 28170162246179. The next prime is 28170162246221. The reversal of 28170162246209 is 90264226107182.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18902034436609 + 9268127809600 = 4347647^2 + 3044360^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28170162246209 is a prime.

It is not a weakly prime, because it can be changed into another prime (28170162206209) 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, 14085081123104 + 14085081123105.

It is an arithmetic number, because the mean of its divisors is an integer number (14085081123105).

Almost surely, 2^{28170162246209} is an apocalyptic number.

It is an amenable number.

28170162246209 is a deficient number, since it is larger than the sum of its proper divisors (1).

28170162246209 is an equidigital number, since it uses as much as digits as its factorization.

28170162246209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1161216, while the sum is 50.

The spelling of 28170162246209 in words is "twenty-eight trillion, one hundred seventy billion, one hundred sixty-two million, two hundred forty-six thousand, two hundred nine".