809473620672 has 42 divisors (see below), whose sum is σ = 2320209980348. Its totient is φ = 269824540032.

The previous prime is 809473620667. The next prime is 809473620751. The reversal of 809473620672 is 276026374908.

809473620672 is a `hidden beast` number, since 8 + 0 + 9 + 4 + 7 + 3 + 620 + 6 + 7 + 2 = 666.

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 5 ways as a sum of consecutive naturals, for example, 702667498 + ... + 702668649.

Almost surely, 2^809473620672 is an apocalyptic number.

It is an amenable number.

809473620672 is an abundant number, since it is smaller than the sum of its proper divisors (1510736359676).

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

809473620672 is a wasteful number, since it uses less digits than its factorization.

809473620672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1405336165 (or 1405336152 counting only the distinct ones).

The product of its (nonzero) digits is 6096384, while the sum is 54.

The spelling of 809473620672 in words is "eight hundred nine billion, four hundred seventy-three million, six hundred twenty thousand, six hundred seventy-two".