165051820833 has 8 divisors (see below), whose sum is σ = 220129617408. Its totient is φ = 110004285744.

The previous prime is 165051820789. The next prime is 165051820837. The reversal of 165051820833 is 338028150561.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 165051820833 - 2²² = 165047626529 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (165051820837) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7552641 + ... + 7574462.

It is an arithmetic number, because the mean of its divisors is an integer number (27516202176).

Almost surely, 2^165051820833 is an apocalyptic number.

It is an amenable number.

165051820833 is a deficient number, since it is larger than the sum of its proper divisors (55077796575).

165051820833 is a wasteful number, since it uses less digits than its factorization.

165051820833 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15130743.

The product of its (nonzero) digits is 172800, while the sum is 42.

The spelling of 165051820833 in words is "one hundred sixty-five billion, fifty-one million, eight hundred twenty thousand, eight hundred thirty-three".