857375867185 has 8 divisors (see below), whose sum is σ = 1045717451496. Its totient is φ = 674656419840.

The previous prime is 857375867177. The next prime is 857375867203. The reversal of 857375867185 is 581768573758.

857375867185 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 63452098609 + 793923768576 = 251897^2 + 891024^2 .

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

It is not a de Polignac number, because 857375867185 - 2³ = 857375867177 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1405533904 + ... + 1405534513.

It is an arithmetic number, because the mean of its divisors is an integer number (130714681437).

Almost surely, 2^857375867185 is an apocalyptic number.

It is an amenable number.

857375867185 is a deficient number, since it is larger than the sum of its proper divisors (188341584311).

857375867185 is a wasteful number, since it uses less digits than its factorization.

857375867185 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2811068483.

The product of its digits is 395136000, while the sum is 70.

The spelling of 857375867185 in words is "eight hundred fifty-seven billion, three hundred seventy-five million, eight hundred sixty-seven thousand, one hundred eighty-five".