99990000010000 has 50 divisors (see below), whose sum is σ = 242085789048422. Its totient is φ = 39996000000000.

The previous prime is 99990000009989. The next prime is 99990000010031. The reversal of 99990000010000 is 1000009999.

It can be written as a sum of positive squares in 5 ways, for example, as 23610230849296 + 76379769160704 = 4859036^2 + 8739552^2 .

It is a tau number, because it is divible by the number of its divisors (50).

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 4999490001 + ... + 4999510000.

Almost surely, 2^{99990000010000} is an apocalyptic number.

It is an amenable number.

99990000010000 is an abundant number, since it is smaller than the sum of its proper divisors (142095789038422).

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

99990000010000 is an equidigital number, since it uses as much as digits as its factorization.

99990000010000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9999000029 (or 9999000008 counting only the distinct ones).

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

Adding to 99990000010000 its reverse (1000009999), we get a palindrome (99991000019999).

The spelling of 99990000010000 in words is "ninety-nine trillion, nine hundred ninety billion, ten thousand".