7988959616 has 64 divisors (see below), whose sum is σ = 17378841600. Its totient is φ = 3627901440.

The previous prime is 7988959607. The next prime is 7988959631. The reversal of 7988959616 is 6169598897.

It is a tau number, because it is divible by the number of its divisors (64).

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, 2024141 + ... + 2028083.

It is an arithmetic number, because the mean of its divisors is an integer number (271544400).

Almost surely, 2^7988959616 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 7988959616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8689420800).

7988959616 is an abundant number, since it is smaller than the sum of its proper divisors (9389881984).

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

7988959616 is a wasteful number, since it uses less digits than its factorization.

7988959616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5407 (or 5395 counting only the distinct ones).

The product of its digits is 58786560, while the sum is 68.

The square root of 7988959616 is about 89380.9801691613. The cubic root of 7988959616 is about 1999.0795444458.

The spelling of 7988959616 in words is "seven billion, nine hundred eighty-eight million, nine hundred fifty-nine thousand, six hundred sixteen".