85665163000 has 128 divisors (see below), whose sum is σ = 202807800000. Its totient is φ = 33865728000.

The previous prime is 85665162977. The next prime is 85665163013. The reversal of 85665163000 is 36156658.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 68586376 + ... + 68587624.

Almost surely, 2^85665163000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 85665163000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101403900000).

85665163000 is an abundant number, since it is smaller than the sum of its proper divisors (117142637000).

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

85665163000 is a wasteful number, since it uses less digits than its factorization.

85665163000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2018 (or 2004 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 40.

The spelling of 85665163000 in words is "eighty-five billion, six hundred sixty-five million, one hundred sixty-three thousand".