9943788359680 has 624 divisors, whose sum is σ = 29681463277440. Its totient is φ = 3177037430784.

The previous prime is 9943788359677. The next prime is 9943788359699. The reversal of 9943788359680 is 869538873499.

It is a self number, because there is not a number n which added to its sum of digits gives 9943788359680.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1757160691 + ... + 1757166349.

It is an arithmetic number, because the mean of its divisors is an integer number (47566447560).

Almost surely, 2^{9943788359680} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9943788359680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14840731638720).

9943788359680 is an abundant number, since it is smaller than the sum of its proper divisors (19737674917760).

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

9943788359680 is a wasteful number, since it uses less digits than its factorization.

9943788359680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5822 (or 5793 counting only the distinct ones).

The product of its (nonzero) digits is 2821754880, while the sum is 79.

The spelling of 9943788359680 in words is "nine trillion, nine hundred forty-three billion, seven hundred eighty-eight million, three hundred fifty-nine thousand, six hundred eighty".