85047863936 has 128 divisors (see below), whose sum is σ = 197741900160. Its totient is φ = 35683614720.

The previous prime is 85047863759. The next prime is 85047863981. The reversal of 85047863936 is 63936874058.

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

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 15 ways as a sum of consecutive naturals, for example, 8956151 + ... + 8965641.

It is an arithmetic number, because the mean of its divisors is an integer number (1544858595).

Almost surely, 2^85047863936 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 85047863936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98870950080).

85047863936 is an abundant number, since it is smaller than the sum of its proper divisors (112694036224).

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

85047863936 is a wasteful number, since it uses less digits than its factorization.

85047863936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9722 (or 9710 counting only the distinct ones).

The product of its (nonzero) digits is 26127360, while the sum is 59.

The spelling of 85047863936 in words is "eighty-five billion, forty-seven million, eight hundred sixty-three thousand, nine hundred thirty-six".