7988926298897 has 4 divisors (see below), whose sum is σ = 7988932027620. Its totient is φ = 7988920570176.

The previous prime is 7988926298867. The next prime is 7988926298957.

7988926298897 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 5227666115281 + 2761260183616 = 2286409^2 + 1661704^2 .

It is a cyclic number.

It is not a de Polignac number, because 7988926298897 - 2¹² = 7988926294801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7988926298867) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 735629 + ... + 4064357.

It is an arithmetic number, because the mean of its divisors is an integer number (1997233006905).

Almost surely, 2^{7988926298897} is an apocalyptic number.

It is an amenable number.

7988926298897 is a deficient number, since it is larger than the sum of its proper divisors (5728723).

7988926298897 is a wasteful number, since it uses less digits than its factorization.

7988926298897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5728722.

The product of its digits is 31603654656, while the sum is 92.

The spelling of 7988926298897 in words is "seven trillion, nine hundred eighty-eight billion, nine hundred twenty-six million, two hundred ninety-eight thousand, eight hundred ninety-seven".