9999000010000 has 100 divisors (see below), whose sum is σ = 24443616188992. Its totient is φ = 3960768528000.

The previous prime is 9999000009967. The next prime is 9999000010067. The reversal of 9999000010000 is 100009999.

It is a tau number, because it is divible by the number of its divisors (100).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3823884 + ... + 5883883.

Almost surely, 2^{9999000010000} is an apocalyptic number.

It is an amenable number.

9999000010000 is an abundant number, since it is smaller than the sum of its proper divisors (14444616178992).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9999000010000 is a wasteful number, since it uses less digits than its factorization.

9999000010000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9707898 (or 9707877 counting only the distinct ones).

The product of its (nonzero) digits is 6561, while the sum is 37.

Adding to 9999000010000 its reverse (100009999), we get a palindrome (9999100019999).

It can be divided in two parts, 99990000 and 10000, that added together give a 8-th power (100000000 = 10⁸).

The spelling of 9999000010000 in words is "nine trillion, nine hundred ninety-nine billion, ten thousand".