13502009042065 has 8 divisors (see below), whose sum is σ = 16219629146088. Its totient is φ = 10790128369920.

The previous prime is 13502009042009. The next prime is 13502009042077. The reversal of 13502009042065 is 56024090020531.

It is a Cunningham number, because it is equal to 3674508²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 1 + 13502009042064 = 1^2 + 3674508^2 .

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

It is not a de Polignac number, because 13502009042065 - 2²⁹ = 13501472171153 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1434852792 + ... + 1434862201.

It is an arithmetic number, because the mean of its divisors is an integer number (2027453643261).

Almost surely, 2^{13502009042065} is an apocalyptic number.

It is an amenable number.

13502009042065 is a deficient number, since it is larger than the sum of its proper divisors (2717620104023).

13502009042065 is an equidigital number, since it uses as much as digits as its factorization.

13502009042065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2869715939.

The product of its (nonzero) digits is 64800, while the sum is 37.

Adding to 13502009042065 its reverse (56024090020531), we get a palindrome (69526099062596).

The spelling of 13502009042065 in words is "thirteen trillion, five hundred two billion, nine million, forty-two thousand, sixty-five".