165053002266 has 56 divisors (see below), whose sum is σ = 371682191700. Its totient is φ = 54946118016.

The previous prime is 165053002237. The next prime is 165053002321. The reversal of 165053002266 is 662200350561.

It is a happy number.

165053002266 is a `hidden beast` number, since 1 + 65 + 0 + 530 + 0 + 2 + 2 + 66 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 161346019041 + 3706983225 = 401679^2 + 60885^2 .

It is a super-2 number, since 2×165053002266² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 165053002266.

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 1053810 + ... + 1200258.

Almost surely, 2^165053002266 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 165053002266, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (185841095850).

165053002266 is an abundant number, since it is smaller than the sum of its proper divisors (206629189434).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

165053002266 is an equidigital number, since it uses as much as digits as its factorization.

165053002266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147242 (or 147227 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

The spelling of 165053002266 in words is "one hundred sixty-five billion, fifty-three million, two thousand, two hundred sixty-six".