13430562665 has 24 divisors (see below), whose sum is σ = 17540589528. Its totient is φ = 9867486720.

The previous prime is 13430562643. The next prime is 13430562671. The reversal of 13430562665 is 56626503431.

It can be written as a sum of positive squares in 12 ways, for example, as 331531264 + 13099031401 = 18208^2 + 114451^2 .

It is not a de Polignac number, because 13430562665 - 2³⁰ = 12356820841 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 126125 + ... + 206805.

It is an arithmetic number, because the mean of its divisors is an integer number (730857897).

Almost surely, 2^13430562665 is an apocalyptic number.

It is an amenable number.

13430562665 is a deficient number, since it is larger than the sum of its proper divisors (4110026863).

13430562665 is a wasteful number, since it uses less digits than its factorization.

13430562665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80909 (or 80896 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 41.

The spelling of 13430562665 in words is "thirteen billion, four hundred thirty million, five hundred sixty-two thousand, six hundred sixty-five".