163363265221 has 16 divisors (see below), whose sum is σ = 177885646848. Its totient is φ = 149127955200.

The previous prime is 163363265201. The next prime is 163363265231. The reversal of 163363265221 is 122562363361.

It is a cyclic number.

It is not a de Polignac number, because 163363265221 - 2²⁷ = 163229047493 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163363265201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 354381 + ... + 672541.

It is an arithmetic number, because the mean of its divisors is an integer number (11117852928).

Almost surely, 2^163363265221 is an apocalyptic number.

It is an amenable number.

163363265221 is a deficient number, since it is larger than the sum of its proper divisors (14522381627).

163363265221 is a wasteful number, since it uses less digits than its factorization.

163363265221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318612.

The product of its digits is 233280, while the sum is 40.

The spelling of 163363265221 in words is "one hundred sixty-three billion, three hundred sixty-three million, two hundred sixty-five thousand, two hundred twenty-one".