13265615323261 has 8 divisors (see below), whose sum is σ = 16052509298880. Its totient is φ = 10701672865728.

The previous prime is 13265615323231. The next prime is 13265615323267. The reversal of 13265615323261 is 16232351656231.

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

It is a cyclic number.

It is not a de Polignac number, because 13265615323261 - 2⁵ = 13265615323229 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13265615323267) 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, 55737879391 + ... + 55737879628.

It is an arithmetic number, because the mean of its divisors is an integer number (2006563662360).

Almost surely, 2^{13265615323261} is an apocalyptic number.

It is an amenable number.

13265615323261 is a deficient number, since it is larger than the sum of its proper divisors (2786893975619).

13265615323261 is a wasteful number, since it uses less digits than its factorization.

13265615323261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111475759043.

The product of its digits is 1166400, while the sum is 46.

Adding to 13265615323261 its reverse (16232351656231), we get a palindrome (29497966979492).

The spelling of 13265615323261 in words is "thirteen trillion, two hundred sixty-five billion, six hundred fifteen million, three hundred twenty-three thousand, two hundred sixty-one".