85985022900 has 144 divisors (see below), whose sum is σ = 284690556416. Its totient is φ = 19628369280.

The previous prime is 85985022863. The next prime is 85985022901. The reversal of 85985022900 is 922058958.

It is a super-2 number, since 2×85985022900² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 85985022900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85985022901) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1626687 + ... + 1678713.

Almost surely, 2^85985022900 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 85985022900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (142345278208).

85985022900 is an abundant number, since it is smaller than the sum of its proper divisors (198705533516).

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

85985022900 is a wasteful number, since it uses less digits than its factorization.

85985022900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52838 (or 52831 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 48.

The spelling of 85985022900 in words is "eighty-five billion, nine hundred eighty-five million, twenty-two thousand, nine hundred".