847155915816 has 256 divisors, whose sum is σ = 2562852096000. Its totient is φ = 227958312960.

The previous prime is 847155915757. The next prime is 847155915829. The reversal of 847155915816 is 618519551748.

847155915816 is digitally balanced in base 2 and base 4, because in such bases 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 847155915816.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 526510020 + ... + 526511628.

It is an arithmetic number, because the mean of its divisors is an integer number (10011141000).

Almost surely, 2^847155915816 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 847155915816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1281426048000).

847155915816 is an abundant number, since it is smaller than the sum of its proper divisors (1715696180184).

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

847155915816 is a wasteful number, since it uses less digits than its factorization.

847155915816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2512 (or 2508 counting only the distinct ones).

The product of its digits is 12096000, while the sum is 60.

The spelling of 847155915816 in words is "eight hundred forty-seven billion, one hundred fifty-five million, nine hundred fifteen thousand, eight hundred sixteen".