856318380372 has 72 divisors (see below), whose sum is σ = 2664101638016. Its totient is φ = 225842209344.

The previous prime is 856318380347. The next prime is 856318380503. The reversal of 856318380372 is 273083813658.

856318380372 is a `hidden beast` number, since 8 + 563 + 1 + 8 + 3 + 8 + 0 + 3 + 72 = 666.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 130692448 + ... + 130698999.

Almost surely, 2^856318380372 is an apocalyptic number.

It is an amenable number.

856318380372 is an abundant number, since it is smaller than the sum of its proper divisors (1807783257644).

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

856318380372 is a wasteful number, since it uses less digits than its factorization.

856318380372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261391477 (or 261391472 counting only the distinct ones).

The product of its (nonzero) digits is 5806080, while the sum is 54.

The spelling of 856318380372 in words is "eight hundred fifty-six billion, three hundred eighteen million, three hundred eighty thousand, three hundred seventy-two".