13055415661 has 2 divisors, whose sum is σ = 13055415662. Its totient is φ = 13055415660.

The previous prime is 13055415643. The next prime is 13055415673. The reversal of 13055415661 is 16651455031.

13055415661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7681646025 + 5373769636 = 87645^2 + 73306^2 .

It is a cyclic number.

It is not a de Polignac number, because 13055415661 - 2²³ = 13047027053 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13055415661.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13055415161) 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, 6527707830 + 6527707831.

It is an arithmetic number, because the mean of its divisors is an integer number (6527707831).

Almost surely, 2^13055415661 is an apocalyptic number.

It is an amenable number.

13055415661 is a deficient number, since it is larger than the sum of its proper divisors (1).

13055415661 is an equidigital number, since it uses as much as digits as its factorization.

13055415661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54000, while the sum is 37.

The spelling of 13055415661 in words is "thirteen billion, fifty-five million, four hundred fifteen thousand, six hundred sixty-one".