85244684928 has 128 divisors (see below), whose sum is σ = 244285675200. Its totient is φ = 26182164480.

The previous prime is 85244684807. The next prime is 85244684929. The reversal of 85244684928 is 82948644258.

It is a tau number, because it is divible by the number of its divisors (128).

It is not an unprimeable number, because it can be changed into a prime (85244684929) 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, 2825443 + ... + 2855453.

Almost surely, 2^85244684928 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 85244684928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (122142837600).

85244684928 is an abundant number, since it is smaller than the sum of its proper divisors (159040990272).

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

85244684928 is a wasteful number, since it uses less digits than its factorization.

85244684928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30610 (or 30598 counting only the distinct ones).

The product of its digits is 35389440, while the sum is 60.

The spelling of 85244684928 in words is "eighty-five billion, two hundred forty-four million, six hundred eighty-four thousand, nine hundred twenty-eight".