7988734378897 has 8 divisors (see below), whose sum is σ = 7991224891776. Its totient is φ = 7986244266432.

The previous prime is 7988734378879. The next prime is 7988734378991.

7988734378897 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7988734378897 - 2¹⁹ = 7988733854609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7988734378847) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42597948 + ... + 42785074.

It is an arithmetic number, because the mean of its divisors is an integer number (998903111472).

Almost surely, 2^{7988734378897} is an apocalyptic number.

It is an amenable number.

7988734378897 is a deficient number, since it is larger than the sum of its proper divisors (2490512879).

7988734378897 is a wasteful number, since it uses less digits than its factorization.

7988734378897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200207.

The product of its digits is 28677390336, while the sum is 88.

The spelling of 7988734378897 in words is "seven trillion, nine hundred eighty-eight billion, seven hundred thirty-four million, three hundred seventy-eight thousand, eight hundred ninety-seven".