662989308169 has 2 divisors, whose sum is σ = 662989308170. Its totient is φ = 662989308168.

The previous prime is 662989308133. The next prime is 662989308181. The reversal of 662989308169 is 961803989266.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 660500794944 + 2488513225 = 812712^2 + 49885^2 .

It is a cyclic number.

It is not a de Polignac number, because 662989308169 - 2⁹ = 662989307657 is a prime.

It is a super-2 number, since 2×662989308169² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (662989308199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 331494654084 + 331494654085.

It is an arithmetic number, because the mean of its divisors is an integer number (331494654085).

Almost surely, 2^662989308169 is an apocalyptic number.

It is an amenable number.

662989308169 is a deficient number, since it is larger than the sum of its proper divisors (1).

662989308169 is an equidigital number, since it uses as much as digits as its factorization.

662989308169 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 60466176, while the sum is 67.

The spelling of 662989308169 in words is "six hundred sixty-two billion, nine hundred eighty-nine million, three hundred eight thousand, one hundred sixty-nine".