856156828782 has 16 divisors (see below), whose sum is σ = 1717486814592. Its totient is φ = 284523416760.

The previous prime is 856156828757. The next prime is 856156828829. The reversal of 856156828782 is 287828651658.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 215546058 + ... + 215550029.

It is an arithmetic number, because the mean of its divisors is an integer number (107342925912).

Almost surely, 2^856156828782 is an apocalyptic number.

856156828782 is an abundant number, since it is smaller than the sum of its proper divisors (861329985810).

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

856156828782 is a wasteful number, since it uses less digits than its factorization.

856156828782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 431096423.

The product of its digits is 103219200, while the sum is 66.

The spelling of 856156828782 in words is "eight hundred fifty-six billion, one hundred fifty-six million, eight hundred twenty-eight thousand, seven hundred eighty-two".