13521042617 has 2 divisors, whose sum is σ = 13521042618. Its totient is φ = 13521042616.

The previous prime is 13521042581. The next prime is 13521042641. The reversal of 13521042617 is 71624012531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11842010041 + 1679032576 = 108821^2 + 40976^2 .

It is a cyclic number.

It is not a de Polignac number, because 13521042617 - 2¹² = 13521038521 is a prime.

It is not a weakly prime, because it can be changed into another prime (13521042917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6760521308 + 6760521309.

It is an arithmetic number, because the mean of its divisors is an integer number (6760521309).

Almost surely, 2^13521042617 is an apocalyptic number.

It is an amenable number.

13521042617 is a deficient number, since it is larger than the sum of its proper divisors (1).

13521042617 is an equidigital number, since it uses as much as digits as its factorization.

13521042617 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10080, while the sum is 32.

The spelling of 13521042617 in words is "thirteen billion, five hundred twenty-one million, forty-two thousand, six hundred seventeen".