9988108511 has 16 divisors (see below), whose sum is σ = 10140318720. Its totient is φ = 9837492000.

The previous prime is 9988108489. The next prime is 9988108541. The reversal of 9988108511 is 1158018899.

It is a cyclic number.

It is not a de Polignac number, because 9988108511 - 2¹⁸ = 9987846367 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 9988108511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9988108541) 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 in 15 ways as a sum of consecutive naturals, for example, 10017665 + ... + 10018661.

It is an arithmetic number, because the mean of its divisors is an integer number (633769920).

Almost surely, 2^9988108511 is an apocalyptic number.

9988108511 is a deficient number, since it is larger than the sum of its proper divisors (152210209).

9988108511 is a wasteful number, since it uses less digits than its factorization.

9988108511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1654.

The product of its (nonzero) digits is 207360, while the sum is 50.

The square root of 9988108511 is about 99940.5248685437. The cubic root of 9988108511 is about 2153.5803700905.

The spelling of 9988108511 in words is "nine billion, nine hundred eighty-eight million, one hundred eight thousand, five hundred eleven".