165334832809 has 2 divisors, whose sum is σ = 165334832810. Its totient is φ = 165334832808.

The previous prime is 165334832801. The next prime is 165334832863. The reversal of 165334832809 is 908238433561.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 131551290000 + 33783542809 = 362700^2 + 183803^2 .

It is a cyclic number.

It is not a de Polignac number, because 165334832809 - 2³ = 165334832801 is a prime.

It is not a weakly prime, because it can be changed into another prime (165334832801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82667416404 + 82667416405.

It is an arithmetic number, because the mean of its divisors is an integer number (82667416405).

Almost surely, 2^165334832809 is an apocalyptic number.

It is an amenable number.

165334832809 is a deficient number, since it is larger than the sum of its proper divisors (1).

165334832809 is an equidigital number, since it uses as much as digits as its factorization.

165334832809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3732480, while the sum is 52.

The spelling of 165334832809 in words is "one hundred sixty-five billion, three hundred thirty-four million, eight hundred thirty-two thousand, eight hundred nine".