85840562500 has 168 divisors, whose sum is σ = 234120753216. Its totient is φ = 26754000000.

The previous prime is 85840562461. The next prime is 85840562503. The reversal of 85840562500 is 526504858.

It is not an unprimeable number, because it can be changed into a prime (85840562503) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 4803582 + ... + 4821418.

It is an arithmetic number, because the mean of its divisors is an integer number (1393575912).

Almost surely, 2^85840562500 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 85840562500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (117060376608).

85840562500 is an abundant number, since it is smaller than the sum of its proper divisors (148280190716).

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

85840562500 is a wasteful number, since it uses less digits than its factorization.

85840562500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17889 (or 17862 counting only the distinct ones).

The product of its (nonzero) digits is 384000, while the sum is 43.

The spelling of 85840562500 in words is "eighty-five billion, eight hundred forty million, five hundred sixty-two thousand, five hundred".