85865554406712 has 64 divisors (see below), whose sum is σ = 215474949360000. Its totient is φ = 28513905789824.

The previous prime is 85865554406651. The next prime is 85865554406719. The reversal of 85865554406712 is 21760445556858.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85865554406719) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 878914 + ... + 13134062.

It is an arithmetic number, because the mean of its divisors is an integer number (3366796083750).

Almost surely, 2^{85865554406712} is an apocalyptic number.

It is an amenable number.

85865554406712 is an abundant number, since it is smaller than the sum of its proper divisors (129609394953288).

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

85865554406712 is a wasteful number, since it uses less digits than its factorization.

85865554406712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12256260 (or 12256256 counting only the distinct ones).

The product of its (nonzero) digits is 322560000, while the sum is 66.

The spelling of 85865554406712 in words is "eighty-five trillion, eight hundred sixty-five billion, five hundred fifty-four million, four hundred six thousand, seven hundred twelve".