7997948688 has 80 divisors (see below), whose sum is σ = 21089989440. Its totient is φ = 2611243008.

The previous prime is 7997948627. The next prime is 7997948689. The reversal of 7997948688 is 8868497997.

It is not an unprimeable number, because it can be changed into a prime (7997948689) 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, 448356 + ... + 465852.

It is an arithmetic number, because the mean of its divisors is an integer number (263624868).

Almost surely, 2^7997948688 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 7997948688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10544994720).

7997948688 is an abundant number, since it is smaller than the sum of its proper divisors (13092040752).

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

7997948688 is a wasteful number, since it uses less digits than its factorization.

7997948688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17704 (or 17698 counting only the distinct ones).

The product of its digits is 438939648, while the sum is 75.

The square root of 7997948688 is about 89431.2511821231. The cubic root of 7997948688 is about 1999.8290427206.

The spelling of 7997948688 in words is "seven billion, nine hundred ninety-seven million, nine hundred forty-eight thousand, six hundred eighty-eight".