13051042809 has 8 divisors (see below), whose sum is σ = 19887303360. Its totient is φ = 7457738736.

The previous prime is 13051042793. The next prime is 13051042847. The reversal of 13051042809 is 90824015031.

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

It is not a de Polignac number, because 13051042809 - 2⁴ = 13051042793 is a prime.

It is a super-2 number, since 2×13051042809² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 13051042809.

It is not an unprimeable number, because it can be changed into a prime (13051042889) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 310739094 + ... + 310739135.

It is an arithmetic number, because the mean of its divisors is an integer number (2485912920).

Almost surely, 2^13051042809 is an apocalyptic number.

It is an amenable number.

13051042809 is a deficient number, since it is larger than the sum of its proper divisors (6836260551).

13051042809 is an equidigital number, since it uses as much as digits as its factorization.

13051042809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 621478239.

The product of its (nonzero) digits is 8640, while the sum is 33.

The spelling of 13051042809 in words is "thirteen billion, fifty-one million, forty-two thousand, eight hundred nine".