13261533251405 has 16 divisors (see below), whose sum is σ = 16732507423104. Its totient is φ = 10070490555840.

The previous prime is 13261533251381. The next prime is 13261533251413. The reversal of 13261533251405 is 50415233516231.

It is not a de Polignac number, because 13261533251405 - 2¹⁴ = 13261533235021 is a prime.

It is a Duffinian number.

It is a congruent 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 15 ways as a sum of consecutive naturals, for example, 440128754 + ... + 440158883.

It is an arithmetic number, because the mean of its divisors is an integer number (1045781713944).

Almost surely, 2^{13261533251405} is an apocalyptic number.

It is an amenable number.

13261533251405 is a deficient number, since it is larger than the sum of its proper divisors (3470974171699).

13261533251405 is a wasteful number, since it uses less digits than its factorization.

13261533251405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 880287796.

The product of its (nonzero) digits is 324000, while the sum is 41.

Adding to 13261533251405 its reverse (50415233516231), we get a palindrome (63676766767636).

The spelling of 13261533251405 in words is "thirteen trillion, two hundred sixty-one billion, five hundred thirty-three million, two hundred fifty-one thousand, four hundred five".