10010009999 has 4 divisors (see below), whose sum is σ = 10920010920. Its totient is φ = 9100009080.

The previous prime is 10010009987. The next prime is 10010010013. The reversal of 10010009999 is 99990001001.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 10010009999 - 2⁸ = 10010009743 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 (10010009959) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 455000444 + ... + 455000465.

It is an arithmetic number, because the mean of its divisors is an integer number (2730002730).

Almost surely, 2^10010009999 is an apocalyptic number.

10010009999 is a deficient number, since it is larger than the sum of its proper divisors (910000921).

10010009999 is an equidigital number, since it uses as much as digits as its factorization.

10010009999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 910000920.

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

The spelling of 10010009999 in words is "ten billion, ten million, nine thousand, nine hundred ninety-nine".