858086068521 has 48 divisors (see below), whose sum is σ = 1324350457920. Its totient is φ = 492464649600.

The previous prime is 858086068517. The next prime is 858086068531. The reversal of 858086068521 is 125860680858.

It is a happy number.

858086068521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 858086068521 - 2² = 858086068517 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is not an unprimeable number, because it can be changed into a prime (858086068531) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 16395631 + ... + 16447883.

It is an arithmetic number, because the mean of its divisors is an integer number (27590634540).

Almost surely, 2^858086068521 is an apocalyptic number.

It is an amenable number.

858086068521 is a deficient number, since it is larger than the sum of its proper divisors (466264389399).

858086068521 is a wasteful number, since it uses less digits than its factorization.

858086068521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54678 (or 54667 counting only the distinct ones).

The product of its (nonzero) digits is 7372800, while the sum is 57.

The spelling of 858086068521 in words is "eight hundred fifty-eight billion, eighty-six million, sixty-eight thousand, five hundred twenty-one".