809049688968 has 16 divisors (see below), whose sum is σ = 2022624222480. Its totient is φ = 269683229648.

The previous prime is 809049688939. The next prime is 809049689023. The reversal of 809049688968 is 869886940908.

It is a super-2 number, since 2×809049688968² (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 809049688968.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16855201830 + ... + 16855201877.

It is an arithmetic number, because the mean of its divisors is an integer number (126414013905).

Almost surely, 2^809049688968 is an apocalyptic number.

It is an amenable number.

809049688968 is an abundant number, since it is smaller than the sum of its proper divisors (1213574533512).

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

809049688968 is a wasteful number, since it uses less digits than its factorization.

809049688968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33710403716 (or 33710403712 counting only the distinct ones).

The product of its (nonzero) digits is 429981696, while the sum is 75.

The spelling of 809049688968 in words is "eight hundred nine billion, forty-nine million, six hundred eighty-eight thousand, nine hundred sixty-eight".