85642446804 has 12 divisors (see below), whose sum is σ = 199832375904. Its totient is φ = 28547482264.

The previous prime is 85642446803. The next prime is 85642446859. The reversal of 85642446804 is 40864424658.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85642446803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3568435272 + ... + 3568435295.

It is an arithmetic number, because the mean of its divisors is an integer number (16652697992).

Almost surely, 2^85642446804 is an apocalyptic number.

It is an amenable number.

85642446804 is an abundant number, since it is smaller than the sum of its proper divisors (114189929100).

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

85642446804 is a wasteful number, since it uses less digits than its factorization.

85642446804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7136870574 (or 7136870572 counting only the distinct ones).

The product of its (nonzero) digits is 5898240, while the sum is 51.

The spelling of 85642446804 in words is "eighty-five billion, six hundred forty-two million, four hundred forty-six thousand, eight hundred four".