856708545807658 has 8 divisors (see below), whose sum is σ = 1300545503274528. Its totient is φ = 423193378049484.

The previous prime is 856708545807623. The next prime is 856708545807683.

856708545807658 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

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 3 ways as a sum of consecutive naturals, for example, 2580447426966 + ... + 2580447427297.

It is an arithmetic number, because the mean of its divisors is an integer number (162568187909316).

Almost surely, 2^{856708545807658} is an apocalyptic number.

856708545807658 is a deficient number, since it is larger than the sum of its proper divisors (443836957466870).

856708545807658 is a wasteful number, since it uses less digits than its factorization.

856708545807658 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5160894854348.

The product of its (nonzero) digits is 18063360000, while the sum is 82.

The spelling of 856708545807658 in words is "eight hundred fifty-six trillion, seven hundred eight billion, five hundred forty-five million, eight hundred seven thousand, six hundred fifty-eight".