13500000009 has 6 divisors (see below), whose sum is σ = 19500000026. Its totient is φ = 9000000000.

The previous prime is 13499999987. The next prime is 13500000037. The reversal of 13500000009 is 90000000531.

It can be written as a sum of positive squares in only one way, i.e., 7333353225 + 6166646784 = 85635^2 + 78528^2 .

It is a de Polignac number, because none of the positive numbers 2^k-13500000009 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 13499999937 and 13500000000.

It is not an unprimeable number, because it can be changed into a prime (13500000109) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 749999992 + ... + 750000009.

Almost surely, 2^13500000009 is an apocalyptic number.

It is an amenable number.

13500000009 is a deficient number, since it is larger than the sum of its proper divisors (6000000017).

13500000009 is a wasteful number, since it uses less digits than its factorization.

13500000009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1500000007 (or 1500000004 counting only the distinct ones).

The product of its (nonzero) digits is 135, while the sum is 18.

The spelling of 13500000009 in words is "thirteen billion, five hundred million, nine", and thus it is an aban number.