9800985072186 has 1152 divisors, whose sum is σ = 30585993984000. Its totient is φ = 2323088087040.

The previous prime is 9800985072163. The next prime is 9800985072187. The reversal of 9800985072186 is 6812705890089.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (9800985072187) by changing a digit.

It is a polite number, since it can be written in 575 ways as a sum of consecutive naturals, for example, 134260069446 + ... + 134260069518.

It is an arithmetic number, because the mean of its divisors is an integer number (26550342000).

Almost surely, 2^{9800985072186} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9800985072186, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15292996992000).

9800985072186 is an abundant number, since it is smaller than the sum of its proper divisors (20785008911814).

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

9800985072186 is a wasteful number, since it uses less digits than its factorization.

9800985072186 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271 (or 172 counting only the distinct ones).

The product of its (nonzero) digits is 17418240, while the sum is 63.

The spelling of 9800985072186 in words is "nine trillion, eight hundred billion, nine hundred eighty-five million, seventy-two thousand, one hundred eighty-six".