13500320065 has 8 divisors (see below), whose sum is σ = 16201317888. Its totient is φ = 10799633520.

The previous prime is 13500320047. The next prime is 13500320081. The reversal of 13500320065 is 56002300531.

It is a happy number.

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

It is not a de Polignac number, because 13500320065 - 2¹⁷ = 13500188993 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, 31584 + ... + 167326.

It is an arithmetic number, because the mean of its divisors is an integer number (2025164736).

Almost surely, 2^13500320065 is an apocalyptic number.

It is an amenable number.

13500320065 is a deficient number, since it is larger than the sum of its proper divisors (2700997823).

13500320065 is a wasteful number, since it uses less digits than its factorization.

13500320065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155639.

The product of its (nonzero) digits is 2700, while the sum is 25.

Adding to 13500320065 its reverse (56002300531), we get a palindrome (69502620596).

The spelling of 13500320065 in words is "thirteen billion, five hundred million, three hundred twenty thousand, sixty-five".