85856458812 has 24 divisors (see below), whose sum is σ = 200485049856. Its totient is φ = 28596917808.

The previous prime is 85856458789. The next prime is 85856458817. The reversal of 85856458812 is 21885465858.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85856458817) 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, 2721388 + ... + 2752755.

It is an arithmetic number, because the mean of its divisors is an integer number (8353543744).

Almost surely, 2^85856458812 is an apocalyptic number.

It is an amenable number.

85856458812 is an abundant number, since it is smaller than the sum of its proper divisors (114628591044).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

85856458812 is a wasteful number, since it uses less digits than its factorization.

85856458812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5475457 (or 5475455 counting only the distinct ones).

The product of its digits is 24576000, while the sum is 60.

The spelling of 85856458812 in words is "eighty-five billion, eight hundred fifty-six million, four hundred fifty-eight thousand, eight hundred twelve".