13505512002265 has 16 divisors (see below), whose sum is σ = 16231352553360. Its totient is φ = 10787925253120.

The previous prime is 13505512002239. The next prime is 13505512002329. The reversal of 13505512002265 is 56220021550531.

It can be written as a sum of positive squares in 8 ways, for example, as 1639946604816 + 11865565397449 = 1280604^2 + 3444643^2 .

It is not a de Polignac number, because 13505512002265 - 2³⁹ = 12955756188377 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13517397 + ... + 14482093.

It is an arithmetic number, because the mean of its divisors is an integer number (1014459534585).

Almost surely, 2^{13505512002265} is an apocalyptic number.

It is an amenable number.

13505512002265 is a deficient number, since it is larger than the sum of its proper divisors (2725840551095).

13505512002265 is an equidigital number, since it uses as much as digits as its factorization.

13505512002265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 968972.

The product of its (nonzero) digits is 90000, while the sum is 37.

Adding to 13505512002265 its reverse (56220021550531), we get a palindrome (69725533552796).

The spelling of 13505512002265 in words is "thirteen trillion, five hundred five billion, five hundred twelve million, two thousand, two hundred sixty-five".