7988888888897 has 12 divisors (see below), whose sum is σ = 9293339957616. Its totient is φ = 6847513916040.

The previous prime is 7988888888873. The next prime is 7988888888917.

It is a happy number.

7988888888897 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 7988888888897 - 2¹⁰ = 7988888887873 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7988888888897.

It is not an unprimeable number, because it can be changed into a prime (7988888888867) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2061122 + ... + 4497332.

It is an arithmetic number, because the mean of its divisors is an integer number (774444996468).

Almost surely, 2^{7988888888897} is an apocalyptic number.

It is an amenable number.

7988888888897 is a deficient number, since it is larger than the sum of its proper divisors (1304451068719).

7988888888897 is a wasteful number, since it uses less digits than its factorization.

7988888888897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2503148 (or 2503141 counting only the distinct ones).

The product of its digits is 532710162432, while the sum is 104.

The spelling of 7988888888897 in words is "seven trillion, nine hundred eighty-eight billion, eight hundred eighty-eight million, eight hundred eighty-eight thousand, eight hundred ninety-seven".