80001800009 has 8 divisors (see below), whose sum is σ = 80353607040. Its totient is φ = 79650396496.

The previous prime is 80001799963. The next prime is 80001800071. The reversal of 80001800009 is 90000810008.

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 80001800009 - 2²⁰ = 80000751433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80001800089) 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, 300002 + ... + 500004.

It is an arithmetic number, because the mean of its divisors is an integer number (10044200880).

Almost surely, 2^80001800009 is an apocalyptic number.

It is an amenable number.

80001800009 is a deficient number, since it is larger than the sum of its proper divisors (351807031).

80001800009 is a wasteful number, since it uses less digits than its factorization.

80001800009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201759.

The product of its (nonzero) digits is 576, while the sum is 26.

Subtracting 80001800009 from its reverse (90000810008), we obtain a palindrome (9999009999).

The spelling of 80001800009 in words is "eighty billion, one million, eight hundred thousand, nine".