9000009081865 has 8 divisors (see below), whose sum is σ = 10802575637568. Its totient is φ = 7198297439280.

The previous prime is 9000009081859. The next prime is 9000009081961. The reversal of 9000009081865 is 5681809000009.

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

It is a de Polignac number, because none of the positive numbers 2^k-9000009081865 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 213705117 + ... + 213747226.

It is an arithmetic number, because the mean of its divisors is an integer number (1350321954696).

Almost surely, 2^{9000009081865} is an apocalyptic number.

It is an amenable number.

9000009081865 is a deficient number, since it is larger than the sum of its proper divisors (1802566555703).

9000009081865 is a wasteful number, since it uses less digits than its factorization.

9000009081865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427456559.

The product of its (nonzero) digits is 155520, while the sum is 46.

The spelling of 9000009081865 in words is "nine trillion, nine million, eighty-one thousand, eight hundred sixty-five".