13644535453049 has 2 divisors, whose sum is σ = 13644535453050. Its totient is φ = 13644535453048.

The previous prime is 13644535453001. The next prime is 13644535453111. The reversal of 13644535453049 is 94035453544631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11292913203049 + 2351622250000 = 3360493^2 + 1533500^2 .

It is an emirp because it is prime and its reverse (94035453544631) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13644535453049 is a prime.

It is a super-2 number, since 2×13644535453049² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13644535452985 and 13644535453003.

It is not a weakly prime, because it can be changed into another prime (13644535453849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6822267726524 + 6822267726525.

It is an arithmetic number, because the mean of its divisors is an integer number (6822267726525).

Almost surely, 2^{13644535453049} is an apocalyptic number.

It is an amenable number.

13644535453049 is a deficient number, since it is larger than the sum of its proper divisors (1).

13644535453049 is an equidigital number, since it uses as much as digits as its factorization.

13644535453049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46656000, while the sum is 56.

The spelling of 13644535453049 in words is "thirteen trillion, six hundred forty-four billion, five hundred thirty-five million, four hundred fifty-three thousand, forty-nine".