819684484856 has 16 divisors (see below), whose sum is σ = 1536928533000. Its totient is φ = 409836876064.

The previous prime is 819684484847. The next prime is 819684484897. The reversal of 819684484856 is 658484486918.

819684484856 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 819684484856.

It is a congruent number.

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, 20246 + ... + 1280538.

Almost surely, 2^819684484856 is an apocalyptic number.

It is an amenable number.

819684484856 is a deficient number, since it is larger than the sum of its proper divisors (717244048144).

819684484856 is a wasteful number, since it uses less digits than its factorization.

819684484856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1341598 (or 1341594 counting only the distinct ones).

The product of its digits is 424673280, while the sum is 71.

The spelling of 819684484856 in words is "eight hundred nineteen billion, six hundred eighty-four million, four hundred eighty-four thousand, eight hundred fifty-six".