169996546609 has 2 divisors, whose sum is σ = 169996546610. Its totient is φ = 169996546608.

The previous prime is 169996546591. The next prime is 169996546649. The reversal of 169996546609 is 906645699961.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 169496890000 + 499656609 = 411700^2 + 22353^2 .

It is an emirp because it is prime and its reverse (906645699961) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 169996546609 - 2¹¹ = 169996544561 is a prime.

It is not a weakly prime, because it can be changed into another prime (169996546649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84998273304 + 84998273305.

It is an arithmetic number, because the mean of its divisors is an integer number (84998273305).

Almost surely, 2^169996546609 is an apocalyptic number.

It is an amenable number.

169996546609 is a deficient number, since it is larger than the sum of its proper divisors (1).

169996546609 is an equidigital number, since it uses as much as digits as its factorization.

169996546609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 170061120, while the sum is 70.

The spelling of 169996546609 in words is "one hundred sixty-nine billion, nine hundred ninety-six million, five hundred forty-six thousand, six hundred nine".