9386821680384 has 72 divisors (see below), whose sum is σ = 26297510340640. Its totient is φ = 2964259473408.

The previous prime is 9386821680371. The next prime is 9386821680421. The reversal of 9386821680384 is 4830861286839.

It is a super-2 number, since 2×9386821680384² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 321628147 + ... + 321657330.

Almost surely, 2^{9386821680384} is an apocalyptic number.

It is an amenable number.

9386821680384 is an abundant number, since it is smaller than the sum of its proper divisors (16910688660256).

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

9386821680384 is a wasteful number, since it uses less digits than its factorization.

9386821680384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 643285515 (or 643285501 counting only the distinct ones).

The product of its (nonzero) digits is 95551488, while the sum is 66.

The spelling of 9386821680384 in words is "nine trillion, three hundred eighty-six billion, eight hundred twenty-one million, six hundred eighty thousand, three hundred eighty-four".