7988663716488 has 128 divisors (see below), whose sum is σ = 27311670892800. Its totient is φ = 2106900315648.

The previous prime is 7988663716447. The next prime is 7988663716489. The reversal of 7988663716488 is 8846173668897.

7988663716488 is a `hidden beast` number, since 7 + 9 + 8 + 8 + 6 + 63 + 71 + 6 + 488 = 666.

It is a super-3 number, since 3×7988663716488³ (a number of 40 digits) contains 333 as substring.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (7988663716489) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 203192181 + ... + 203231492.

It is an arithmetic number, because the mean of its divisors is an integer number (213372428850).

Almost surely, 2^{7988663716488} is an apocalyptic number.

7988663716488 is a gapful number since it is divisible by the number (78) formed by its first and last digit.

It is an amenable number.

7988663716488 is an abundant number, since it is smaller than the sum of its proper divisors (19323007176312).

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

7988663716488 is a wasteful number, since it uses less digits than its factorization.

7988663716488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406423708 (or 406423698 counting only the distinct ones).

The product of its digits is 4682022912, while the sum is 81.

The spelling of 7988663716488 in words is "seven trillion, nine hundred eighty-eight billion, six hundred sixty-three million, seven hundred sixteen thousand, four hundred eighty-eight".