856974464023 has 16 divisors (see below), whose sum is σ = 890346844800. Its totient is φ = 823864456800.

The previous prime is 856974464011. The next prime is 856974464029. The reversal of 856974464023 is 320464479658.

It is not a de Polignac number, because 856974464023 - 2⁹ = 856974463511 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 (856974464029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6287548 + ... + 6422398.

It is an arithmetic number, because the mean of its divisors is an integer number (55646677800).

Almost surely, 2^856974464023 is an apocalyptic number.

856974464023 is a deficient number, since it is larger than the sum of its proper divisors (33372380777).

856974464023 is a wasteful number, since it uses less digits than its factorization.

856974464023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135822.

The product of its (nonzero) digits is 34836480, while the sum is 58.

The spelling of 856974464023 in words is "eight hundred fifty-six billion, nine hundred seventy-four million, four hundred sixty-four thousand, twenty-three".