9878886888789 has 16 divisors (see below), whose sum is σ = 13374723741120. Its totient is φ = 6484579664640.

The previous prime is 9878886888757. The next prime is 9878886888799.

9878886888789 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 9878886888789 - 2⁵ = 9878886888757 is a prime.

It is a super-2 number, since 2×9878886888789² (a number of 27 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 9878886888693 and 9878886888702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9878886888719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11114742 + ... + 11970599.

It is an arithmetic number, because the mean of its divisors is an integer number (835920233820).

Almost surely, 2^{9878886888789} is an apocalyptic number.

It is an amenable number.

9878886888789 is a deficient number, since it is larger than the sum of its proper divisors (3495836852331).

9878886888789 is a wasteful number, since it uses less digits than its factorization.

9878886888789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23087540.

The product of its digits is 399532621824, while the sum is 102.

The spelling of 9878886888789 in words is "nine trillion, eight hundred seventy-eight billion, eight hundred eighty-six million, eight hundred eighty-eight thousand, seven hundred eighty-nine".