9908909384472 has 192 divisors, whose sum is σ = 33087306358080. Its totient is φ = 2614305447936.

The previous prime is 9908909384447. The next prime is 9908909384477. The reversal of 9908909384472 is 2744839098099.

9908909384472 is a `hidden beast` number, since 9 + 9 + 0 + 8 + 90 + 93 + 8 + 447 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a self number, because there is not a number n which added to its sum of digits gives 9908909384472.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9908909384477) 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, 10456293 + ... + 11364500.

It is an arithmetic number, because the mean of its divisors is an integer number (172329720615).

Almost surely, 2^{9908909384472} is an apocalyptic number.

It is an amenable number.

9908909384472 is an abundant number, since it is smaller than the sum of its proper divisors (23178396973608).

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

9908909384472 is a wasteful number, since it uses less digits than its factorization.

9908909384472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21820882 (or 21820875 counting only the distinct ones).

The product of its (nonzero) digits is 282175488, while the sum is 72.

The spelling of 9908909384472 in words is "nine trillion, nine hundred eight billion, nine hundred nine million, three hundred eighty-four thousand, four hundred seventy-two".