13449965821177 has 2 divisors, whose sum is σ = 13449965821178. Its totient is φ = 13449965821176.

The previous prime is 13449965821093. The next prime is 13449965821267. The reversal of 13449965821177 is 77112856994431.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11612582860176 + 1837382961001 = 3407724^2 + 1355501^2 .

It is an emirp because it is prime and its reverse (77112856994431) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13449965821177 - 2⁷ = 13449965821049 is a prime.

It is not a weakly prime, because it can be changed into another prime (13449965821277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6724982910588 + 6724982910589.

It is an arithmetic number, because the mean of its divisors is an integer number (6724982910589).

Almost surely, 2^{13449965821177} is an apocalyptic number.

It is an amenable number.

13449965821177 is a deficient number, since it is larger than the sum of its proper divisors (1).

13449965821177 is an equidigital number, since it uses as much as digits as its factorization.

13449965821177 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 91445760, while the sum is 67.

The spelling of 13449965821177 in words is "thirteen trillion, four hundred forty-nine billion, nine hundred sixty-five million, eight hundred twenty-one thousand, one hundred seventy-seven".