13155243424481 has 2 divisors, whose sum is σ = 13155243424482. Its totient is φ = 13155243424480.

The previous prime is 13155243424333. The next prime is 13155243424529. The reversal of 13155243424481 is 18442434255131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9572990700625 + 3582252723856 = 3094025^2 + 1892684^2 .

It is an emirp because it is prime and its reverse (18442434255131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13155243424481 - 2¹⁸ = 13155243162337 is a prime.

It is a super-2 number, since 2×13155243424481² (a number of 27 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (13155243444481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6577621712240 + 6577621712241.

It is an arithmetic number, because the mean of its divisors is an integer number (6577621712241).

Almost surely, 2^{13155243424481} is an apocalyptic number.

It is an amenable number.

13155243424481 is a deficient number, since it is larger than the sum of its proper divisors (1).

13155243424481 is an equidigital number, since it uses as much as digits as its factorization.

13155243424481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1843200, while the sum is 47.

The spelling of 13155243424481 in words is "thirteen trillion, one hundred fifty-five billion, two hundred forty-three million, four hundred twenty-four thousand, four hundred eighty-one".