856009427863 has 8 divisors (see below), whose sum is σ = 864509050368. Its totient is φ = 847542434304.

The previous prime is 856009427849. The next prime is 856009427879. The reversal of 856009427863 is 368724900658.

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 856009427863 - 2⁵ = 856009427831 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 856009427798 and 856009427807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (856009427843) 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, 8104506 + ... + 8209447.

It is an arithmetic number, because the mean of its divisors is an integer number (108063631296).

Almost surely, 2^856009427863 is an apocalyptic number.

856009427863 is a deficient number, since it is larger than the sum of its proper divisors (8499622505).

856009427863 is a wasteful number, since it uses less digits than its factorization.

856009427863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16314473.

The product of its (nonzero) digits is 17418240, while the sum is 58.

The spelling of 856009427863 in words is "eight hundred fifty-six billion, nine million, four hundred twenty-seven thousand, eight hundred sixty-three".