856336730320 has 40 divisors (see below), whose sum is σ = 2002105740960. Its totient is φ = 340621084800.

The previous prime is 856336730311. The next prime is 856336730323. The reversal of 856336730320 is 23037633658.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (856336730323) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 29885706 + ... + 29914345.

It is an arithmetic number, because the mean of its divisors is an integer number (50052643524).

Almost surely, 2^856336730320 is an apocalyptic number.

856336730320 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

856336730320 is an abundant number, since it is smaller than the sum of its proper divisors (1145769010640).

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

856336730320 is a wasteful number, since it uses less digits than its factorization.

856336730320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59800243 (or 59800237 counting only the distinct ones).

The product of its (nonzero) digits is 1632960, while the sum is 46.

The spelling of 856336730320 in words is "eight hundred fifty-six billion, three hundred thirty-six million, seven hundred thirty thousand, three hundred twenty".