9988888888871 has 2 divisors, whose sum is σ = 9988888888872. Its totient is φ = 9988888888870.

The previous prime is 9988888888859. The next prime is 9988888888919. The reversal of 9988888888871 is 1788888888899.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 9988888888871 - 2¹⁸ = 9988888626727 is a prime.

It is a nialpdrome in base 10.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9988888888841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4994444444435 + 4994444444436.

It is an arithmetic number, because the mean of its divisors is an integer number (4994444444436).

Almost surely, 2^{9988888888871} is an apocalyptic number.

9988888888871 is a deficient number, since it is larger than the sum of its proper divisors (1).

9988888888871 is an equidigital number, since it uses as much as digits as its factorization.

9988888888871 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 76101451776, while the sum is 98.

The spelling of 9988888888871 in words is "nine trillion, nine hundred eighty-eight billion, eight hundred eighty-eight million, eight hundred eighty-eight thousand, eight hundred seventy-one".