858248863647 has 8 divisors (see below), whose sum is σ = 1307807792256. Its totient is φ = 490427922072.

The previous prime is 858248863627. The next prime is 858248863663. The reversal of 858248863647 is 746368842858.

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

It is not a de Polignac number, because 858248863647 - 2⁶ = 858248863583 is a prime.

It is a super-2 number, since 2×858248863647² (a number of 25 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (69) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (858248863627) 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, 20434496733 + ... + 20434496774.

It is an arithmetic number, because the mean of its divisors is an integer number (163475974032).

Almost surely, 2^858248863647 is an apocalyptic number.

858248863647 is a deficient number, since it is larger than the sum of its proper divisors (449558928609).

858248863647 is a wasteful number, since it uses less digits than its factorization.

858248863647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40868993517.

The product of its digits is 495452160, while the sum is 69.

The spelling of 858248863647 in words is "eight hundred fifty-eight billion, two hundred forty-eight million, eight hundred sixty-three thousand, six hundred forty-seven".