856023327705 has 32 divisors (see below), whose sum is σ = 1685707478784. Its totient is φ = 361223030016.

The previous prime is 856023327617. The next prime is 856023327743. The reversal of 856023327705 is 507723320658.

It is not a de Polignac number, because 856023327705 - 2²¹ = 856021230553 is a prime.

It is a Curzon number.

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, 313560294 + ... + 313563023.

It is an arithmetic number, because the mean of its divisors is an integer number (52678358712).

Almost surely, 2^856023327705 is an apocalyptic number.

It is an amenable number.

856023327705 is a deficient number, since it is larger than the sum of its proper divisors (829684151079).

856023327705 is a wasteful number, since it uses less digits than its factorization.

856023327705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 627123345.

The product of its (nonzero) digits is 2116800, while the sum is 48.

The spelling of 856023327705 in words is "eight hundred fifty-six billion, twenty-three million, three hundred twenty-seven thousand, seven hundred five".