856816002723 has 8 divisors (see below), whose sum is σ = 1142954937936. Its totient is φ = 570943868000.

The previous prime is 856816002703. The next prime is 856816002739. The reversal of 856816002723 is 327200618658.

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 856816002723 - 2¹⁴ = 856815986339 is a prime.

It is not an unprimeable number, because it can be changed into a prime (856816002703) by changing a digit.

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, 66692628 + ... + 66705473.

It is an arithmetic number, because the mean of its divisors is an integer number (142869367242).

Almost surely, 2^856816002723 is an apocalyptic number.

856816002723 is a deficient number, since it is larger than the sum of its proper divisors (286138935213).

856816002723 is a wasteful number, since it uses less digits than its factorization.

856816002723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133400245.

The product of its (nonzero) digits is 967680, while the sum is 48.

The spelling of 856816002723 in words is "eight hundred fifty-six billion, eight hundred sixteen million, two thousand, seven hundred twenty-three".