808816172928 has 64 divisors (see below), whose sum is σ = 2217721797120. Its totient is φ = 260908439040.

The previous prime is 808816172891. The next prime is 808816172947. The reversal of 808816172928 is 829271618808.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is an unprimeable number.

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, 33960550 + ... + 33984357.

It is an arithmetic number, because the mean of its divisors is an integer number (34651903080).

Almost surely, 2^808816172928 is an apocalyptic number.

It is an amenable number.

808816172928 is an abundant number, since it is smaller than the sum of its proper divisors (1408905624192).

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

808816172928 is a wasteful number, since it uses less digits than its factorization.

808816172928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67944955 (or 67944943 counting only the distinct ones).

The product of its (nonzero) digits is 6193152, while the sum is 60.

The spelling of 808816172928 in words is "eight hundred eight billion, eight hundred sixteen million, one hundred seventy-two thousand, nine hundred twenty-eight".