13530195817 has 2 divisors, whose sum is σ = 13530195818. Its totient is φ = 13530195816.

The previous prime is 13530195703. The next prime is 13530195823. The reversal of 13530195817 is 71859103531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12373447696 + 1156748121 = 111236^2 + 34011^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13530195817 is a prime.

It is not a weakly prime, because it can be changed into another prime (13530196817) 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 as a sum of consecutive naturals, namely, 6765097908 + 6765097909.

It is an arithmetic number, because the mean of its divisors is an integer number (6765097909).

Almost surely, 2^13530195817 is an apocalyptic number.

It is an amenable number.

13530195817 is a deficient number, since it is larger than the sum of its proper divisors (1).

13530195817 is an equidigital number, since it uses as much as digits as its factorization.

13530195817 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 113400, while the sum is 43.

The spelling of 13530195817 in words is "thirteen billion, five hundred thirty million, one hundred ninety-five thousand, eight hundred seventeen".