13260310505 has 16 divisors (see below), whose sum is σ = 18144426384. Its totient is φ = 9216215040.

The previous prime is 13260310457. The next prime is 13260310529. The reversal of 13260310505 is 50501306231.

It can be written as a sum of positive squares in 8 ways, for example, as 3130290601 + 10130019904 = 55949^2 + 100648^2 .

It is not a de Polignac number, because 13260310505 - 2²² = 13256116201 is a prime.

It is a Duffinian number.

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, 5999036 + ... + 6001245.

It is an arithmetic number, because the mean of its divisors is an integer number (1134026649).

Almost surely, 2^13260310505 is an apocalyptic number.

It is an amenable number.

13260310505 is a deficient number, since it is larger than the sum of its proper divisors (4884115879).

13260310505 is a wasteful number, since it uses less digits than its factorization.

13260310505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12000316.

The product of its (nonzero) digits is 2700, while the sum is 26.

Adding to 13260310505 its reverse (50501306231), we get a palindrome (63761616736).

The spelling of 13260310505 in words is "thirteen billion, two hundred sixty million, three hundred ten thousand, five hundred five".