85187534412 has 96 divisors (see below), whose sum is σ = 222082560000. Its totient is φ = 25276168192.

The previous prime is 85187534401. The next prime is 85187534437. The reversal of 85187534412 is 21443578158.

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, 315589 + ... + 519587.

It is an arithmetic number, because the mean of its divisors is an integer number (2313360000).

Almost surely, 2^85187534412 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 85187534412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (111041280000).

85187534412 is an abundant number, since it is smaller than the sum of its proper divisors (136895025588).

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

85187534412 is a wasteful number, since it uses less digits than its factorization.

85187534412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204135 (or 204133 counting only the distinct ones).

The product of its digits is 1075200, while the sum is 48.

The spelling of 85187534412 in words is "eighty-five billion, one hundred eighty-seven million, five hundred thirty-four thousand, four hundred twelve".