85865065078828 has 48 divisors (see below), whose sum is σ = 173270660189760. Its totient is φ = 36469278203904.

The previous prime is 85865065078813. The next prime is 85865065078841. The reversal of 85865065078828 is 82887056056858.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24804438 + ... + 28053346.

It is an arithmetic number, because the mean of its divisors is an integer number (3609805420620).

Almost surely, 2^{85865065078828} is an apocalyptic number.

It is an amenable number.

85865065078828 is an abundant number, since it is smaller than the sum of its proper divisors (87405595110932).

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

85865065078828 is a wasteful number, since it uses less digits than its factorization.

85865065078828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3257386 (or 3257384 counting only the distinct ones).

The product of its (nonzero) digits is 2064384000, while the sum is 76.

The spelling of 85865065078828 in words is "eighty-five trillion, eight hundred sixty-five billion, sixty-five million, seventy-eight thousand, eight hundred twenty-eight".