856005360013 has 8 divisors (see below), whose sum is σ = 856935988920. Its totient is φ = 855074976000.

The previous prime is 856005360011. The next prime is 856005360043. The reversal of 856005360013 is 310063500658.

It can be written as a sum of positive squares in 4 ways, for example, as 282307204 + 855723052809 = 16802^2 + 925053^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 856005360013 - 2¹ = 856005360011 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (856005360011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7426881 + ... + 7541257.

It is an arithmetic number, because the mean of its divisors is an integer number (107116998615).

Almost surely, 2^856005360013 is an apocalyptic number.

It is an amenable number.

856005360013 is a deficient number, since it is larger than the sum of its proper divisors (930628907).

856005360013 is a wasteful number, since it uses less digits than its factorization.

856005360013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122447.

The product of its (nonzero) digits is 64800, while the sum is 37.

The spelling of 856005360013 in words is "eight hundred fifty-six billion, five million, three hundred sixty thousand, thirteen".