856071451200 has 672 divisors, whose sum is σ = 3299901935616. Its totient is φ = 190227824640.

The previous prime is 856071451199. The next prime is 856071451201. The reversal of 856071451200 is 2154170658.

It is an interprime number because it is at equal distance from previous prime (856071451199) and next prime (856071451201).

It is a tau number, because it is divible by the number of its divisors (672).

It is not an unprimeable number, because it can be changed into a prime (856071451201) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 336637129 + ... + 336639671.

Almost surely, 2^856071451200 is an apocalyptic number.

856071451200 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 856071451200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1649950967808).

856071451200 is an abundant number, since it is smaller than the sum of its proper divisors (2443830484416).

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

856071451200 is a wasteful number, since it uses less digits than its factorization.

856071451200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2851 (or 2836 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 39.

The spelling of 856071451200 in words is "eight hundred fifty-six billion, seventy-one million, four hundred fifty-one thousand, two hundred".