99999985000000 has 448 divisors, whose sum is σ = 253423882483200. Its totient is φ = 39139328000000.

The previous prime is 99999984999979. The next prime is 99999985000039. The reversal of 99999985000000 is 58999999.

It is a nialpdrome in base 10.

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, 75814999341 + ... + 75815000659.

Almost surely, 2^{99999985000000} is an apocalyptic number.

99999985000000 is the 5000000-th decagonal number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 99999985000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (126711941241600).

99999985000000 is an abundant number, since it is smaller than the sum of its proper divisors (153423897483200).

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

99999985000000 is an frugal number, since it uses more digits than its factorization.

99999985000000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1682 (or 1642 counting only the distinct ones).

The product of its (nonzero) digits is 21257640, while the sum is 67.

The spelling of 99999985000000 in words is "ninety-nine trillion, nine hundred ninety-nine billion, nine hundred eighty-five million", and thus it is an aban number.