9999100019999 has 8 divisors (see below), whose sum is σ = 10164107342400. Its totient is φ = 9834127783200.

The previous prime is 9999100019899. The next prime is 9999100020011.

9999100019999 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 9999100019999 - 2⁸ = 9999100019743 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9999100019899) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8196407 + ... + 9336984.

It is an arithmetic number, because the mean of its divisors is an integer number (1270513417800).

Almost surely, 2^{9999100019999} is an apocalyptic number.

9999100019999 is a deficient number, since it is larger than the sum of its proper divisors (165007322401).

9999100019999 is a wasteful number, since it uses less digits than its factorization.

9999100019999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17542801.

The product of its (nonzero) digits is 43046721, while the sum is 74.

The spelling of 9999100019999 in words is "nine trillion, nine hundred ninety-nine billion, one hundred million, nineteen thousand, nine hundred ninety-nine".