85867844238563 has 8 divisors (see below), whose sum is σ = 86977184537280. Its totient is φ = 84759064079040.

The previous prime is 85867844238443. The next prime is 85867844238569. The reversal of 85867844238563 is 36583244876858.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85867844238563 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85867844238569) 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, 139726220 + ... + 140339417.

It is an arithmetic number, because the mean of its divisors is an integer number (10872148067160).

Almost surely, 2^{85867844238563} is an apocalyptic number.

85867844238563 is a deficient number, since it is larger than the sum of its proper divisors (1109340298717).

85867844238563 is a wasteful number, since it uses less digits than its factorization.

85867844238563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280069597.

The product of its digits is 7431782400, while the sum is 77.

The spelling of 85867844238563 in words is "eighty-five trillion, eight hundred sixty-seven billion, eight hundred forty-four million, two hundred thirty-eight thousand, five hundred sixty-three".