808722168221 has 16 divisors (see below), whose sum is σ = 901062033408. Its totient is φ = 719520601200.

The previous prime is 808722168157. The next prime is 808722168229. The reversal of 808722168221 is 122861227808.

It is a cyclic number.

It is not a de Polignac number, because 808722168221 - 2⁶ = 808722168157 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (808722168229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14232056 + ... + 14288766.

It is an arithmetic number, because the mean of its divisors is an integer number (56316377088).

Almost surely, 2^808722168221 is an apocalyptic number.

It is an amenable number.

808722168221 is a deficient number, since it is larger than the sum of its proper divisors (92339865187).

808722168221 is a wasteful number, since it uses less digits than its factorization.

808722168221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84352.

The product of its (nonzero) digits is 344064, while the sum is 47.

The spelling of 808722168221 in words is "eight hundred eight billion, seven hundred twenty-two million, one hundred sixty-eight thousand, two hundred twenty-one".