13601220697 has 2 divisors, whose sum is σ = 13601220698. Its totient is φ = 13601220696.

The previous prime is 13601220653. The next prime is 13601220701. The reversal of 13601220697 is 79602210631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9962235721 + 3638984976 = 99811^2 + 60324^2 .

It is an emirp because it is prime and its reverse (79602210631) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13601220697 - 2¹¹ = 13601218649 is a prime.

It is not a weakly prime, because it can be changed into another prime (13601820697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6800610348 + 6800610349.

It is an arithmetic number, because the mean of its divisors is an integer number (6800610349).

Almost surely, 2^13601220697 is an apocalyptic number.

It is an amenable number.

13601220697 is a deficient number, since it is larger than the sum of its proper divisors (1).

13601220697 is an equidigital number, since it uses as much as digits as its factorization.

13601220697 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27216, while the sum is 37.

The spelling of 13601220697 in words is "thirteen billion, six hundred one million, two hundred twenty thousand, six hundred ninety-seven".