1344609905081 has 2 divisors, whose sum is σ = 1344609905082. Its totient is φ = 1344609905080.

The previous prime is 1344609905039. The next prime is 1344609905159. The reversal of 1344609905081 is 1805099064431.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1043889280681 + 300720624400 = 1021709^2 + 548380^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1344609905081 is a prime.

It is a super-2 number, since 2×1344609905081² (a number of 25 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1364609905081) 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, 672304952540 + 672304952541.

It is an arithmetic number, because the mean of its divisors is an integer number (672304952541).

Almost surely, 2^{1344609905081} is an apocalyptic number.

It is an amenable number.

1344609905081 is a deficient number, since it is larger than the sum of its proper divisors (1).

1344609905081 is an equidigital number, since it uses as much as digits as its factorization.

1344609905081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 933120, while the sum is 50.

The spelling of 1344609905081 in words is "one trillion, three hundred forty-four billion, six hundred nine million, nine hundred five thousand, eighty-one".