85663843832 has 64 divisors (see below), whose sum is σ = 187196486400. Its totient is φ = 35993617920.

The previous prime is 85663843813. The next prime is 85663843847. The reversal of 85663843832 is 23834836658.

It is a Harshad number since it is a multiple of its sum of digits (56).

It is a congruent number.

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, 538544 + ... + 679232.

It is an arithmetic number, because the mean of its divisors is an integer number (2924945100).

Almost surely, 2^85663843832 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 85663843832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93598243200).

85663843832 is an abundant number, since it is smaller than the sum of its proper divisors (101532642568).

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

85663843832 is a wasteful number, since it uses less digits than its factorization.

85663843832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140916 (or 140912 counting only the distinct ones).

The product of its digits is 19906560, while the sum is 56.

The spelling of 85663843832 in words is "eighty-five billion, six hundred sixty-three million, eight hundred forty-three thousand, eight hundred thirty-two".