10000001009999 has 16 divisors (see below), whose sum is σ = 13426574784000. Its totient is φ = 7192807918560.

The previous prime is 10000001009981. The next prime is 10000001010011. The reversal of 10000001009999 is 99990010000001.

It is a happy number.

It is not a de Polignac number, because 10000001009999 - 2³² = 9995706042703 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10000001003999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4995004499 + ... + 4995006500.

It is an arithmetic number, because the mean of its divisors is an integer number (839160924000).

Almost surely, 2^{10000001009999} is an apocalyptic number.

10000001009999 is a deficient number, since it is larger than the sum of its proper divisors (3426573774001).

10000001009999 is a wasteful number, since it uses less digits than its factorization.

10000001009999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9990011030.

The product of its (nonzero) digits is 6561, while the sum is 38.

The spelling of 10000001009999 in words is "ten trillion, one million, nine thousand, nine hundred ninety-nine".