85845854857 has 4 divisors (see below), whose sum is σ = 98109548416. Its totient is φ = 73582161300.

The previous prime is 85845854849. The next prime is 85845854867. The reversal of 85845854857 is 75845854858.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 85845854857 - 2³ = 85845854849 is a prime.

It is a super-2 number, since 2×85845854857² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 85845854792 and 85845854801.

It is not an unprimeable number, because it can be changed into a prime (85845854827) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6131846769 + ... + 6131846782.

It is an arithmetic number, because the mean of its divisors is an integer number (24527387104).

Almost surely, 2^85845854857 is an apocalyptic number.

It is an amenable number.

85845854857 is a deficient number, since it is larger than the sum of its proper divisors (12263693559).

85845854857 is a wasteful number, since it uses less digits than its factorization.

85845854857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12263693558.

The product of its digits is 286720000, while the sum is 67.

Subtracting from 85845854857 its reverse (75845854858), we obtain a palindrome (9999999999).

The spelling of 85845854857 in words is "eighty-five billion, eight hundred forty-five million, eight hundred fifty-four thousand, eight hundred fifty-seven".