165055217202 has 24 divisors (see below), whose sum is σ = 357681384684. Its totient is φ = 55008906144.

The previous prime is 165055217149. The next prime is 165055217209. The reversal of 165055217202 is 202712550561.

165055217202 is a `hidden beast` number, since 1 + 65 + 0 + 5 + 521 + 72 + 0 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 164698800561 + 356416641 = 405831^2 + 18879^2 .

It is not an unprimeable number, because it can be changed into a prime (165055217209) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 684093 + ... + 893360.

Almost surely, 2^165055217202 is an apocalyptic number.

165055217202 is an abundant number, since it is smaller than the sum of its proper divisors (192626167482).

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

165055217202 is a wasteful number, since it uses less digits than its factorization.

165055217202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1583274 (or 1583271 counting only the distinct ones).

The product of its (nonzero) digits is 42000, while the sum is 36.

Adding to 165055217202 its reverse (202712550561), we get a palindrome (367767767763).

The spelling of 165055217202 in words is "one hundred sixty-five billion, fifty-five million, two hundred seventeen thousand, two hundred two".