165053062062221 has 8 divisors (see below), whose sum is σ = 166019896173600. Its totient is φ = 164086725173040.

The previous prime is 165053062062209. The next prime is 165053062062283. The reversal of 165053062062221 is 122260260350561.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-165053062062221 is a prime.

It is a super-2 number, since 2×165053062062221² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165053062061221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 123639695 + ... + 124967516.

It is an arithmetic number, because the mean of its divisors is an integer number (20752487021700).

Almost surely, 2^{165053062062221} is an apocalyptic number.

It is an amenable number.

165053062062221 is a deficient number, since it is larger than the sum of its proper divisors (966834111379).

165053062062221 is a wasteful number, since it uses less digits than its factorization.

165053062062221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248611099.

The product of its (nonzero) digits is 259200, while the sum is 41.

The spelling of 165053062062221 in words is "one hundred sixty-five trillion, fifty-three billion, sixty-two million, sixty-two thousand, two hundred twenty-one".