1344633164561 has 2 divisors, whose sum is σ = 1344633164562. Its totient is φ = 1344633164560.

The previous prime is 1344633164557. The next prime is 1344633164587. The reversal of 1344633164561 is 1654613364431.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 870711068161 + 473922096400 = 933119^2 + 688420^2 .

It is a cyclic number.

It is not a de Polignac number, because 1344633164561 - 2² = 1344633164557 is a prime.

It is not a weakly prime, because it can be changed into another prime (1344633164531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 672316582280 + 672316582281.

It is an arithmetic number, because the mean of its divisors is an integer number (672316582281).

Almost surely, 2^{1344633164561} is an apocalyptic number.

It is an amenable number.

1344633164561 is a deficient number, since it is larger than the sum of its proper divisors (1).

1344633164561 is an equidigital number, since it uses as much as digits as its factorization.

1344633164561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1866240, while the sum is 47.

The spelling of 1344633164561 in words is "one trillion, three hundred forty-four billion, six hundred thirty-three million, one hundred sixty-four thousand, five hundred sixty-one".