1345450561249 has 2 divisors, whose sum is σ = 1345450561250. Its totient is φ = 1345450561248.

The previous prime is 1345450561219. The next prime is 1345450561283. The reversal of 1345450561249 is 9421650545431.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 743595782400 + 601854778849 = 862320^2 + 775793^2 .

It is an emirp because it is prime and its reverse (9421650545431) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1345450561249 - 2⁹ = 1345450560737 is a prime.

It is not a weakly prime, because it can be changed into another prime (1345450561219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 672725280624 + 672725280625.

It is an arithmetic number, because the mean of its divisors is an integer number (672725280625).

Almost surely, 2^{1345450561249} is an apocalyptic number.

It is an amenable number.

1345450561249 is a deficient number, since it is larger than the sum of its proper divisors (1).

1345450561249 is an equidigital number, since it uses as much as digits as its factorization.

1345450561249 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592000, while the sum is 49.

The spelling of 1345450561249 in words is "one trillion, three hundred forty-five billion, four hundred fifty million, five hundred sixty-one thousand, two hundred forty-nine".