7988564158871 has 2 divisors, whose sum is σ = 7988564158872. Its totient is φ = 7988564158870.

The previous prime is 7988564158847. The next prime is 7988564158901. The reversal of 7988564158871 is 1788514658897.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 7988564158871 - 2¹⁸ = 7988563896727 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7988564158792 and 7988564158801.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7988564158811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3994282079435 + 3994282079436.

It is an arithmetic number, because the mean of its divisors is an integer number (3994282079436).

Almost surely, 2^{7988564158871} is an apocalyptic number.

7988564158871 is a deficient number, since it is larger than the sum of its proper divisors (1).

7988564158871 is an equidigital number, since it uses as much as digits as its factorization.

7988564158871 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1083801600, while the sum is 77.

The spelling of 7988564158871 in words is "seven trillion, nine hundred eighty-eight billion, five hundred sixty-four million, one hundred fifty-eight thousand, eight hundred seventy-one".