165226805759 has 4 divisors (see below), whose sum is σ = 165227754216. Its totient is φ = 165225857304.

The previous prime is 165226805747. The next prime is 165226805761. The reversal of 165226805759 is 957508622561.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 165226805759 - 2⁸ = 165226805503 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 (165226805719) 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 3 ways as a sum of consecutive naturals, for example, 129284 + ... + 589209.

It is an arithmetic number, because the mean of its divisors is an integer number (41306938554).

Almost surely, 2^165226805759 is an apocalyptic number.

165226805759 is a deficient number, since it is larger than the sum of its proper divisors (948457).

165226805759 is an equidigital number, since it uses as much as digits as its factorization.

165226805759 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 948456.

The product of its (nonzero) digits is 9072000, while the sum is 56.

The spelling of 165226805759 in words is "one hundred sixty-five billion, two hundred twenty-six million, eight hundred five thousand, seven hundred fifty-nine".