100001009999 has 8 divisors (see below), whose sum is σ = 109095882960. Its totient is φ = 90906782400.

The previous prime is 100001009993. The next prime is 100001010013. The reversal of 100001009999 is 999900100001.

It is a happy number.

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 100001009999 - 2⁸ = 100001009743 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 (100001009993) 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 7 ways as a sum of consecutive naturals, for example, 197339 + ... + 488819.

It is an arithmetic number, because the mean of its divisors is an integer number (13636985370).

Almost surely, 2^100001009999 is an apocalyptic number.

100001009999 is a deficient number, since it is larger than the sum of its proper divisors (9094872961).

100001009999 is a wasteful number, since it uses less digits than its factorization.

100001009999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322681.

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

The spelling of 100001009999 in words is "one hundred billion, one million, nine thousand, nine hundred ninety-nine".