165341674559 has 8 divisors (see below), whose sum is σ = 169934460240. Its totient is φ = 160872931368.

The previous prime is 165341674513. The next prime is 165341674607. The reversal of 165341674559 is 955476143561.

It is a happy number.

It is not a de Polignac number, because 165341674559 - 2¹⁶ = 165341609023 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165341676559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1581449 + ... + 1682754.

It is an arithmetic number, because the mean of its divisors is an integer number (21241807530).

Almost surely, 2^165341674559 is an apocalyptic number.

165341674559 is a deficient number, since it is larger than the sum of its proper divisors (4592785681).

165341674559 is an frugal number, since it uses more digits than its factorization.

165341674559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3264314 (or 3264240 counting only the distinct ones).

The product of its digits is 13608000, while the sum is 56.

The spelling of 165341674559 in words is "one hundred sixty-five billion, three hundred forty-one million, six hundred seventy-four thousand, five hundred fifty-nine".