1305445403117 has 2 divisors, whose sum is σ = 1305445403118. Its totient is φ = 1305445403116.

The previous prime is 1305445403077. The next prime is 1305445403149. The reversal of 1305445403117 is 7113045445031.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1232690590756 + 72754812361 = 1110266^2 + 269731^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1305445403117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1305445403917) 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, 652722701558 + 652722701559.

It is an arithmetic number, because the mean of its divisors is an integer number (652722701559).

Almost surely, 2^{1305445403117} is an apocalyptic number.

It is an amenable number.

1305445403117 is a deficient number, since it is larger than the sum of its proper divisors (1).

1305445403117 is an equidigital number, since it uses as much as digits as its factorization.

1305445403117 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 100800, while the sum is 38.

The spelling of 1305445403117 in words is "one trillion, three hundred five billion, four hundred forty-five million, four hundred three thousand, one hundred seventeen".