7989359616 has 176 divisors, whose sum is σ = 27041361280. Its totient is φ = 2282618880.

The previous prime is 7989359579. The next prime is 7989359617. The reversal of 7989359616 is 6169539897.

7989359616 is a `hidden beast` number, since 7 + 9 + 8 + 9 + 3 + 5 + 9 + 616 = 666.

It is a super-3 number, since 3×7989359616³ (a number of 31 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7989359617) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 172896 + ... + 214176.

Almost surely, 2^7989359616 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 7989359616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13520680640).

7989359616 is an abundant number, since it is smaller than the sum of its proper divisors (19052001664).

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

7989359616 is a wasteful number, since it uses less digits than its factorization.

7989359616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41317 (or 41293 counting only the distinct ones).

The product of its digits is 22044960, while the sum is 63.

The square root of 7989359616 is about 89383.2177536701. The cubic root of 7989359616 is about 1999.1129079253.

The spelling of 7989359616 in words is "seven billion, nine hundred eighty-nine million, three hundred fifty-nine thousand, six hundred sixteen".