166862126017 has 2 divisors, whose sum is σ = 166862126018. Its totient is φ = 166862126016.

The previous prime is 166862126003. The next prime is 166862126071. The reversal of 166862126017 is 710621268661.

Together with next prime (166862126071) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 130892727681 + 35969398336 = 361791^2 + 189656^2 .

It is a cyclic number.

It is not a de Polignac number, because 166862126017 - 2³¹ = 164714642369 is a prime.

It is not a weakly prime, because it can be changed into another prime (166862126087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83431063008 + 83431063009.

It is an arithmetic number, because the mean of its divisors is an integer number (83431063009).

Almost surely, 2^166862126017 is an apocalyptic number.

It is an amenable number.

166862126017 is a deficient number, since it is larger than the sum of its proper divisors (1).

166862126017 is an equidigital number, since it uses as much as digits as its factorization.

166862126017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 290304, while the sum is 46.

The spelling of 166862126017 in words is "one hundred sixty-six billion, eight hundred sixty-two million, one hundred twenty-six thousand, seventeen".