8312578816 has 36 divisors (see below), whose sum is σ = 16792641432. Its totient is φ = 4106203136.

The previous prime is 8312578789. The next prime is 8312578849. The reversal of 8312578816 is 6188752138.

It is a super-4 number, since 4×8312578816⁴ (a number of 41 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 8312578816.

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 3 ways as a sum of consecutive naturals, for example, 174361 + ... + 216856.

It is an arithmetic number, because the mean of its divisors is an integer number (466462262).

Almost surely, 2^8312578816 is an apocalyptic number.

It is an amenable number.

8312578816 is an abundant number, since it is smaller than the sum of its proper divisors (8480062616).

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

8312578816 is an equidigital number, since it uses as much as digits as its factorization.

8312578816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 391316 (or 391302 counting only the distinct ones).

The product of its digits is 645120, while the sum is 49.

The square root of 8312578816 is about 91173.3448766689. The cubic root of 8312578816 is about 2025.7161570802.

The spelling of 8312578816 in words is "eight billion, three hundred twelve million, five hundred seventy-eight thousand, eight hundred sixteen".