13013200561 has 2 divisors, whose sum is σ = 13013200562. Its totient is φ = 13013200560.

The previous prime is 13013200531. The next prime is 13013200583. The reversal of 13013200561 is 16500231031.

It is a happy number.

It is an a-pointer prime, because the next prime (13013200583) can be obtained adding 13013200561 to its sum of digits (22).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12530563600 + 482636961 = 111940^2 + 21969^2 .

It is an emirp because it is prime and its reverse (16500231031) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13013200561 - 2⁹ = 13013200049 is a prime.

It is not a weakly prime, because it can be changed into another prime (13013200531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6506600280 + 6506600281.

It is an arithmetic number, because the mean of its divisors is an integer number (6506600281).

Almost surely, 2^13013200561 is an apocalyptic number.

It is an amenable number.

13013200561 is a deficient number, since it is larger than the sum of its proper divisors (1).

13013200561 is an equidigital number, since it uses as much as digits as its factorization.

13013200561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 540, while the sum is 22.

Adding to 13013200561 its reverse (16500231031), we get a palindrome (29513431592).

The spelling of 13013200561 in words is "thirteen billion, thirteen million, two hundred thousand, five hundred sixty-one".