856761276996 has 189 divisors, whose sum is σ = 2293588234119. Its totient is φ = 279905673600.

The previous prime is 856761276911. The next prime is 856761277003. The reversal of 856761276996 is 699672167658.

The square root of 856761276996 is 925614.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 145302766596 + 711458510400 = 381186^2 + 843480^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 62 ways as a sum of consecutive naturals, for example, 3048972376 + ... + 3048972656.

Almost surely, 2^856761276996 is an apocalyptic number.

856761276996 is the 925614-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 856761276996

856761276996 is an abundant number, since it is smaller than the sum of its proper divisors (1436826957123).

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

856761276996 is an frugal number, since it uses more digits than its factorization.

856761276996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 706 (or 347 counting only the distinct ones).

The product of its digits is 411505920, while the sum is 72.

The spelling of 856761276996 in words is "eight hundred fifty-six billion, seven hundred sixty-one million, two hundred seventy-six thousand, nine hundred ninety-six".