9905384755824 has 20 divisors (see below), whose sum is σ = 25588910619336. Its totient is φ = 3301794918592.

The previous prime is 9905384755813. The next prime is 9905384755837. The reversal of 9905384755824 is 4285574835099.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103181091159 + ... + 103181091254.

Almost surely, 2^{9905384755824} is an apocalyptic number.

It is an amenable number.

9905384755824 is an abundant number, since it is smaller than the sum of its proper divisors (15683525863512).

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

9905384755824 is a wasteful number, since it uses less digits than its factorization.

9905384755824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206362182424 (or 206362182418 counting only the distinct ones).

The product of its (nonzero) digits is 435456000, while the sum is 69.

The spelling of 9905384755824 in words is "nine trillion, nine hundred five billion, three hundred eighty-four million, seven hundred fifty-five thousand, eight hundred twenty-four".