8685204087872 has 112 divisors (see below), whose sum is σ = 18823355548032. Its totient is φ = 3951825408000.

The previous prime is 8685204087827. The next prime is 8685204087883. The reversal of 8685204087872 is 2787804025868.

It is a junction number, because it is equal to n+sod(n) for n = 8685204087799 and 8685204087808.

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 15 ways as a sum of consecutive naturals, for example, 136684973 + ... + 136748499.

It is an arithmetic number, because the mean of its divisors is an integer number (168065674536).

Almost surely, 2^{8685204087872} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8685204087872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9411677774016).

8685204087872 is an abundant number, since it is smaller than the sum of its proper divisors (10138151460160).

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

8685204087872 is a wasteful number, since it uses less digits than its factorization.

8685204087872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65876 (or 65866 counting only the distinct ones).

The product of its (nonzero) digits is 96337920, while the sum is 65.

The spelling of 8685204087872 in words is "eight trillion, six hundred eighty-five billion, two hundred four million, eighty-seven thousand, eight hundred seventy-two".