9985307201280 has 2304 divisors, whose sum is σ = 40854307737600. Its totient is φ = 2295217520640.

The previous prime is 9985307201203. The next prime is 9985307201293. The reversal of 9985307201280 is 821027035899.

9985307201280 is a `hidden beast` number, since 9 + 9 + 8 + 530 + 7 + 20 + 1 + 2 + 80 = 666.

It is a tau number, because it is divible by the number of its divisors (2304).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 37120100986 + ... + 37120101254.

It is an arithmetic number, because the mean of its divisors is an integer number (17731904400).

Almost surely, 2^{9985307201280} is an apocalyptic number.

9985307201280 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9985307201280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20427153868800).

9985307201280 is an abundant number, since it is smaller than the sum of its proper divisors (30869000536320).

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

9985307201280 is a wasteful number, since it uses less digits than its factorization.

9985307201280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 447 (or 427 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 54.

The spelling of 9985307201280 in words is "nine trillion, nine hundred eighty-five billion, three hundred seven million, two hundred one thousand, two hundred eighty".