808816473522 has 66 divisors (see below), whose sum is σ = 1820522444733. Its totient is φ = 269502470352.

The previous prime is 808816473469. The next prime is 808816473527. The reversal of 808816473522 is 225374618808.

808816473522 is a `hidden beast` number, since 80 + 88 + 16 + 473 + 5 + 2 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 528963835401 + 279852638121 = 727299^2 + 529011^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=635931.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (808816473527) 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 32 ways as a sum of consecutive naturals, for example, 309061158 + ... + 309063774.

Almost surely, 2^808816473522 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 808816473522

808816473522 is an abundant number, since it is smaller than the sum of its proper divisors (1011705971211).

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

808816473522 is an frugal number, since it uses more digits than its factorization.

808816473522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5266 (or 2622 counting only the distinct ones).

The product of its (nonzero) digits is 5160960, while the sum is 54.

The spelling of 808816473522 in words is "eight hundred eight billion, eight hundred sixteen million, four hundred seventy-three thousand, five hundred twenty-two".