856441372319 has 32 divisors (see below), whose sum is σ = 995573799360. Its totient is φ = 729929318400.

The previous prime is 856441372313. The next prime is 856441372327. The reversal of 856441372319 is 913273144658.

It is a cyclic number.

It is not a de Polignac number, because 856441372319 - 2²⁰ = 856440323743 is a prime.

It is a super-2 number, since 2×856441372319² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (856441372313) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9850799 + ... + 9937359.

It is an arithmetic number, because the mean of its divisors is an integer number (31111681230).

Almost surely, 2^856441372319 is an apocalyptic number.

856441372319 is a deficient number, since it is larger than the sum of its proper divisors (139132427041).

856441372319 is a wasteful number, since it uses less digits than its factorization.

856441372319 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87611.

The product of its digits is 4354560, while the sum is 53.

The spelling of 856441372319 in words is "eight hundred fifty-six billion, four hundred forty-one million, three hundred seventy-two thousand, three hundred nineteen".