1305445345441 has 4 divisors (see below), whose sum is σ = 1382236248132. Its totient is φ = 1228654442752.

The previous prime is 1305445345411. The next prime is 1305445345447. The reversal of 1305445345441 is 1445435445031.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1177051406400 + 128393939041 = 1084920^2 + 358321^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1305445345441 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1305445345447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38395451320 + ... + 38395451353.

It is an arithmetic number, because the mean of its divisors is an integer number (345559062033).

Almost surely, 2^{1305445345441} is an apocalyptic number.

It is an amenable number.

1305445345441 is a deficient number, since it is larger than the sum of its proper divisors (76790902691).

1305445345441 is an equidigital number, since it uses as much as digits as its factorization.

1305445345441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76790902690.

The product of its (nonzero) digits is 1152000, while the sum is 43.

The spelling of 1305445345441 in words is "one trillion, three hundred five billion, four hundred forty-five million, three hundred forty-five thousand, four hundred forty-one".