13251571254561 has 8 divisors (see below), whose sum is σ = 17833890286944. Its totient is φ = 8751816529280.

The previous prime is 13251571254553. The next prime is 13251571254587. The reversal of 13251571254561 is 16545217515231.

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 13251571254561 - 2³ = 13251571254553 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13251571254561.

It is not an unprimeable number, because it can be changed into a prime (13251571204561) 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, 20641076400 + ... + 20641077041.

It is an arithmetic number, because the mean of its divisors is an integer number (2229236285868).

Almost surely, 2^{13251571254561} is an apocalyptic number.

It is an amenable number.

13251571254561 is a deficient number, since it is larger than the sum of its proper divisors (4582319032383).

13251571254561 is a wasteful number, since it uses less digits than its factorization.

13251571254561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41282153551.

The product of its digits is 1260000, while the sum is 48.

Adding to 13251571254561 its reverse (16545217515231), we get a palindrome (29796788769792).

The spelling of 13251571254561 in words is "thirteen trillion, two hundred fifty-one billion, five hundred seventy-one million, two hundred fifty-four thousand, five hundred sixty-one".