856913349312 has 224 divisors, whose sum is σ = 2661158568960. Its totient is φ = 273217722624.

The previous prime is 856913349301. The next prime is 856913349373. The reversal of 856913349312 is 213943319658.

856913349312 is a `hidden beast` number, since 8 + 5 + 6 + 9 + 133 + 493 + 12 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3086173 + ... + 3352355.

Almost surely, 2^856913349312 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 856913349312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1330579284480).

856913349312 is an abundant number, since it is smaller than the sum of its proper divisors (1804245219648).

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

856913349312 is an equidigital number, since it uses as much as digits as its factorization.

856913349312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266239 (or 266211 counting only the distinct ones).

The product of its digits is 4199040, while the sum is 54.

The spelling of 856913349312 in words is "eight hundred fifty-six billion, nine hundred thirteen million, three hundred forty-nine thousand, three hundred twelve".