809231899675 has 12 divisors (see below), whose sum is σ = 1010182107600. Its totient is φ = 643040647520.

The previous prime is 809231899669. The next prime is 809231899691. The reversal of 809231899675 is 576998132908.

It is not a de Polignac number, because 809231899675 - 2⁵ = 809231899643 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 809231899675.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 108618007 + ... + 108625456.

It is an arithmetic number, because the mean of its divisors is an integer number (84181842300).

Almost surely, 2^809231899675 is an apocalyptic number.

809231899675 is a deficient number, since it is larger than the sum of its proper divisors (200950207925).

809231899675 is a wasteful number, since it uses less digits than its factorization.

809231899675 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217243622 (or 217243617 counting only the distinct ones).

The product of its (nonzero) digits is 58786560, while the sum is 67.

The spelling of 809231899675 in words is "eight hundred nine billion, two hundred thirty-one million, eight hundred ninety-nine thousand, six hundred seventy-five".