85665200136 has 32 divisors (see below), whose sum is σ = 225434738400. Its totient is φ = 27052168320.

The previous prime is 85665200113. The next prime is 85665200141. The reversal of 85665200136 is 63100256658.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 93930685 + ... + 93931596.

It is an arithmetic number, because the mean of its divisors is an integer number (7044835575).

Almost surely, 2^85665200136 is an apocalyptic number.

It is an amenable number.

85665200136 is an abundant number, since it is smaller than the sum of its proper divisors (139769538264).

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

85665200136 is a wasteful number, since it uses less digits than its factorization.

85665200136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187862309 (or 187862305 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 42.

The spelling of 85665200136 in words is "eighty-five billion, six hundred sixty-five million, two hundred thousand, one hundred thirty-six".