9998990000001 has 96 divisors (see below), whose sum is σ = 17001054420480. Its totient is φ = 5783028742656.

The previous prime is 9998989999949. The next prime is 9998990000059. The reversal of 9998990000001 is 1000000998999.

It is not a de Polignac number, because 9998990000001 - 2³⁰ = 9997916258177 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 9998989999893 and 9998989999902.

It is not an unprimeable number, because it can be changed into a prime (9998990000101) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 5315400 + ... + 6946326.

It is an arithmetic number, because the mean of its divisors is an integer number (177094316880).

Almost surely, 2^{9998990000001} is an apocalyptic number.

It is an amenable number.

9998990000001 is a deficient number, since it is larger than the sum of its proper divisors (7002064420479).

9998990000001 is a wasteful number, since it uses less digits than its factorization.

9998990000001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1631028 (or 1631003 counting only the distinct ones).

The product of its (nonzero) digits is 472392, while the sum is 54.

The spelling of 9998990000001 in words is "nine trillion, nine hundred ninety-eight billion, nine hundred ninety million, one", and thus it is an aban number.