10000040000009 has 4 divisors (see below), whose sum is σ = 10000050830340. Its totient is φ = 10000029169680.

The previous prime is 10000039999997. The next prime is 10000040000023. The reversal of 10000040000009 is 90000004000001.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 6752306190400 + 3247733809609 = 2598520^2 + 1802147^2 .

It is a cyclic number.

It is not a de Polignac number, because 10000040000009 - 2²⁰ = 10000038951433 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10000039999948 and 10000040000002.

It is not an unprimeable number, because it can be changed into a prime (10000040000039) 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, 3886274 + ... + 5924795.

It is an arithmetic number, because the mean of its divisors is an integer number (2500012707585).

Almost surely, 2^{10000040000009} is an apocalyptic number.

It is an amenable number.

10000040000009 is a deficient number, since it is larger than the sum of its proper divisors (10830331).

10000040000009 is an equidigital number, since it uses as much as digits as its factorization.

10000040000009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10830330.

The product of its (nonzero) digits is 36, while the sum is 14.

The spelling of 10000040000009 in words is "ten trillion, forty million, nine", and thus it is an aban number and an uban number.