85865056858 has 48 divisors (see below), whose sum is σ = 150390918720. Its totient is φ = 36015880320.

The previous prime is 85865056853. The next prime is 85865056859.

85865056858 is nontrivially palindromic in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 85865056858.

It is not an unprimeable number, because it can be changed into a prime (85865056853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9805410 + ... + 9814162.

It is an arithmetic number, because the mean of its divisors is an integer number (3133144140).

Almost surely, 2^85865056858 is an apocalyptic number.

85865056858 is a deficient number, since it is larger than the sum of its proper divisors (64525861862).

85865056858 is a wasteful number, since it uses less digits than its factorization.

85865056858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9043 (or 8972 counting only the distinct ones).

The product of its (nonzero) digits is 92160000, while the sum is 64.

The spelling of 85865056858 in words is "eighty-five billion, eight hundred sixty-five million, fifty-six thousand, eight hundred fifty-eight".