85852812540 has 192 divisors, whose sum is σ = 274107359232. Its totient is φ = 19874131200.

The previous prime is 85852812523. The next prime is 85852812559. The reversal of 85852812540 is 4521825858.

It is a self number, because there is not a number n which added to its sum of digits gives 85852812540.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 9574099 + ... + 9583061.

It is an arithmetic number, because the mean of its divisors is an integer number (1427642496).

Almost surely, 2^85852812540 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 85852812540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (137053679616).

85852812540 is an abundant number, since it is smaller than the sum of its proper divisors (188254546692).

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

85852812540 is a wasteful number, since it uses less digits than its factorization.

85852812540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9640 (or 9638 counting only the distinct ones).

The product of its (nonzero) digits is 1024000, while the sum is 48.

The spelling of 85852812540 in words is "eighty-five billion, eight hundred fifty-two million, eight hundred twelve thousand, five hundred forty".