808218821304 has 96 divisors (see below), whose sum is σ = 2200898044800. Its totient is φ = 267935976000.

The previous prime is 808218821303. The next prime is 808218821317. The reversal of 808218821304 is 403128812808.

It is a happy number.

It is a super-2 number, since 2×808218821304² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 808218821304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (808218821303) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12310437 + ... + 12375915.

It is an arithmetic number, because the mean of its divisors is an integer number (22926021300).

Almost surely, 2^808218821304 is an apocalyptic number.

It is an amenable number.

808218821304 is an abundant number, since it is smaller than the sum of its proper divisors (1392679223496).

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

808218821304 is a wasteful number, since it uses less digits than its factorization.

808218821304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66425 (or 66418 counting only the distinct ones).

The product of its (nonzero) digits is 196608, while the sum is 45.

The spelling of 808218821304 in words is "eight hundred eight billion, two hundred eighteen million, eight hundred twenty-one thousand, three hundred four".