13261531521301 has 4 divisors (see below), whose sum is σ = 15156036024352. Its totient is φ = 11367027018252.

The previous prime is 13261531521257. The next prime is 13261531521311. The reversal of 13261531521301 is 10312513516231.

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 not a de Polignac number, because 13261531521301 - 2¹⁷ = 13261531390229 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 (13261531521311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 947252251515 + ... + 947252251528.

It is an arithmetic number, because the mean of its divisors is an integer number (3789009006088).

Almost surely, 2^{13261531521301} is an apocalyptic number.

It is an amenable number.

13261531521301 is a deficient number, since it is larger than the sum of its proper divisors (1894504503051).

13261531521301 is an equidigital number, since it uses as much as digits as its factorization.

13261531521301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1894504503050.

The product of its (nonzero) digits is 16200, while the sum is 34.

The spelling of 13261531521301 in words is "thirteen trillion, two hundred sixty-one billion, five hundred thirty-one million, five hundred twenty-one thousand, three hundred one".