9943446493680 has 320 divisors, whose sum is σ = 35408235061248. Its totient is φ = 2261186150400.

The previous prime is 9943446493667. The next prime is 9943446493819. The reversal of 9943446493680 is 863946443499.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 674719272 + ... + 674734008.

Almost surely, 2^{9943446493680} 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 9943446493680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17704117530624).

9943446493680 is an abundant number, since it is smaller than the sum of its proper divisors (25464788567568).

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

9943446493680 is a wasteful number, since it uses less digits than its factorization.

9943446493680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16784 (or 16778 counting only the distinct ones).

The product of its (nonzero) digits is 483729408, while the sum is 69.

The spelling of 9943446493680 in words is "nine trillion, nine hundred forty-three billion, four hundred forty-six million, four hundred ninety-three thousand, six hundred eighty".