7997991336 has 96 divisors (see below), whose sum is σ = 22348085760. Its totient is φ = 2582119296.

The previous prime is 7997991329. The next prime is 7997991383. The reversal of 7997991336 is 6331997997.

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 23 ways as a sum of consecutive naturals, for example, 587341 + ... + 600803.

It is an arithmetic number, because the mean of its divisors is an integer number (232792560).

Almost surely, 2^7997991336 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 7997991336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11174042880).

7997991336 is an abundant number, since it is smaller than the sum of its proper divisors (14350094424).

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

7997991336 is a wasteful number, since it uses less digits than its factorization.

7997991336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13735 (or 13728 counting only the distinct ones).

The product of its digits is 17360406, while the sum is 63.

The square root of 7997991336 is about 89431.4896219447. The cubic root of 7997991336 is about 1999.8325973219.

The spelling of 7997991336 in words is "seven billion, nine hundred ninety-seven million, nine hundred ninety-one thousand, three hundred thirty-six".