856068720000 has 1280 divisors, whose sum is σ = 3237667614720. Its totient is φ = 198881280000.

The previous prime is 856068719977. The next prime is 856068720019. The reversal of 856068720000 is 27860658.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 5126159917 + ... + 5126160083.

It is an arithmetic number, because the mean of its divisors is an integer number (2529427824).

Almost surely, 2^856068720000 is an apocalyptic number.

856068720000 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 856068720000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1618833807360).

856068720000 is an abundant number, since it is smaller than the sum of its proper divisors (2381598894720).

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

856068720000 is a wasteful number, since it uses less digits than its factorization.

856068720000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301 (or 274 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 42.

The spelling of 856068720000 in words is "eight hundred fifty-six billion, sixty-eight million, seven hundred twenty thousand".