9988347164544 has 128 divisors (see below), whose sum is σ = 33690853612800. Its totient is φ = 2853813468672.

The previous prime is 9988347164531. The next prime is 9988347164563. The reversal of 9988347164544 is 4454617438899.

9988347164544 is a `hidden beast` number, since 9 + 9 + 8 + 8 + 3 + 4 + 71 + 6 + 4 + 544 = 666.

It is a tau number, because it is divible by the number of its divisors (128).

It is a super-2 number, since 2×9988347164544² (a number of 27 digits) contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 206414862 + ... + 206463245.

It is an arithmetic number, because the mean of its divisors is an integer number (263209793850).

Almost surely, 2^{9988347164544} is an apocalyptic number.

It is an amenable number.

9988347164544 is an abundant number, since it is smaller than the sum of its proper divisors (23702506448256).

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

9988347164544 is a wasteful number, since it uses less digits than its factorization.

9988347164544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 412878137 (or 412878119 counting only the distinct ones).

The product of its digits is 836075520, while the sum is 72.

The spelling of 9988347164544 in words is "nine trillion, nine hundred eighty-eight billion, three hundred forty-seven million, one hundred sixty-four thousand, five hundred forty-four".