13215103422517 has 2 divisors, whose sum is σ = 13215103422518. Its totient is φ = 13215103422516.

The previous prime is 13215103422503. The next prime is 13215103422617. The reversal of 13215103422517 is 71522430151231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9703729636561 + 3511373785956 = 3115081^2 + 1873866^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13215103422517 is a prime.

It is a super-3 number, since 3×13215103422517³ (a number of 40 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13215103422317) 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 as a sum of consecutive naturals, namely, 6607551711258 + 6607551711259.

It is an arithmetic number, because the mean of its divisors is an integer number (6607551711259).

Almost surely, 2^{13215103422517} is an apocalyptic number.

It is an amenable number.

13215103422517 is a deficient number, since it is larger than the sum of its proper divisors (1).

13215103422517 is an equidigital number, since it uses as much as digits as its factorization.

13215103422517 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 50400, while the sum is 37.

Adding to 13215103422517 its reverse (71522430151231), we get a palindrome (84737533573748).

The spelling of 13215103422517 in words is "thirteen trillion, two hundred fifteen billion, one hundred three million, four hundred twenty-two thousand, five hundred seventeen".