13261533251353 has 4 divisors (see below), whose sum is σ = 13262139958480. Its totient is φ = 13260926544228.

The previous prime is 13261533251327. The next prime is 13261533251381. The reversal of 13261533251353 is 35315233516231.

It is a happy number.

13261533251353 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13261533251353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13261533252353) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 303320775 + ... + 303364492.

It is an arithmetic number, because the mean of its divisors is an integer number (3315534989620).

Almost surely, 2^{13261533251353} is an apocalyptic number.

It is an amenable number.

13261533251353 is a deficient number, since it is larger than the sum of its proper divisors (606707127).

13261533251353 is an equidigital number, since it uses as much as digits as its factorization.

13261533251353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 606707126.

The product of its digits is 729000, while the sum is 43.

Adding to 13261533251353 its reverse (35315233516231), we get a palindrome (48576766767584).

The spelling of 13261533251353 in words is "thirteen trillion, two hundred sixty-one billion, five hundred thirty-three million, two hundred fifty-one thousand, three hundred fifty-three".