809404499512 has 16 divisors (see below), whose sum is σ = 1734438213360. Its totient is φ = 346887642624.

The previous prime is 809404499503. The next prime is 809404499537. The reversal of 809404499512 is 215994404908.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7226825833 + ... + 7226825944.

It is an arithmetic number, because the mean of its divisors is an integer number (108402388335).

Almost surely, 2^809404499512 is an apocalyptic number.

It is an amenable number.

809404499512 is an abundant number, since it is smaller than the sum of its proper divisors (925033713848).

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

809404499512 is a wasteful number, since it uses less digits than its factorization.

809404499512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14453651790 (or 14453651786 counting only the distinct ones).

The product of its (nonzero) digits is 3732480, while the sum is 55.

The spelling of 809404499512 in words is "eight hundred nine billion, four hundred four million, four hundred ninety-nine thousand, five hundred twelve".