13135316573 has 2 divisors, whose sum is σ = 13135316574. Its totient is φ = 13135316572.

The previous prime is 13135316489. The next prime is 13135316633. The reversal of 13135316573 is 37561353131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13128118084 + 7198489 = 114578^2 + 2683^2 .

It is a cyclic number.

It is not a de Polignac number, because 13135316573 - 2²⁸ = 12866881117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13135316273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6567658286 + 6567658287.

It is an arithmetic number, because the mean of its divisors is an integer number (6567658287).

Almost surely, 2^13135316573 is an apocalyptic number.

It is an amenable number.

13135316573 is a deficient number, since it is larger than the sum of its proper divisors (1).

13135316573 is an equidigital number, since it uses as much as digits as its factorization.

13135316573 is an evil number, because the sum of its binary digits is even.

The product of its digits is 85050, while the sum is 38.

The spelling of 13135316573 in words is "thirteen billion, one hundred thirty-five million, three hundred sixteen thousand, five hundred seventy-three".