13261531521401 has 8 divisors (see below), whose sum is σ = 13327918437600. Its totient is φ = 13195177964640.

The previous prime is 13261531521367. The next prime is 13261531521421. The reversal of 13261531521401 is 10412513516231.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13261531521401 is a prime.

It is a super-2 number, since 2×13261531521401² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13261531521421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7542611 + ... + 9133128.

It is an arithmetic number, because the mean of its divisors is an integer number (1665989804700).

Almost surely, 2^{13261531521401} is an apocalyptic number.

It is an amenable number.

13261531521401 is a deficient number, since it is larger than the sum of its proper divisors (66386916199).

13261531521401 is a wasteful number, since it uses less digits than its factorization.

13261531521401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16679719.

The product of its (nonzero) digits is 21600, while the sum is 35.

The spelling of 13261531521401 in words is "thirteen trillion, two hundred sixty-one billion, five hundred thirty-one million, five hundred twenty-one thousand, four hundred one".