13144355669 has 2 divisors, whose sum is σ = 13144355670. Its totient is φ = 13144355668.

The previous prime is 13144355639. The next prime is 13144355687. The reversal of 13144355669 is 96655344131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12413302225 + 731053444 = 111415^2 + 27038^2 .

It is a cyclic number.

It is not a de Polignac number, because 13144355669 - 2¹² = 13144351573 is a prime.

It is a super-2 number, since 2×13144355669² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13144355639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6572177834 + 6572177835.

It is an arithmetic number, because the mean of its divisors is an integer number (6572177835).

Almost surely, 2^13144355669 is an apocalyptic number.

It is an amenable number.

13144355669 is a deficient number, since it is larger than the sum of its proper divisors (1).

13144355669 is an equidigital number, since it uses as much as digits as its factorization.

13144355669 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1166400, while the sum is 47.

The spelling of 13144355669 in words is "thirteen billion, one hundred forty-four million, three hundred fifty-five thousand, six hundred sixty-nine".