1445648880817 has 2 divisors, whose sum is σ = 1445648880818. Its totient is φ = 1445648880816.

The previous prime is 1445648880757. The next prime is 1445648880827. The reversal of 1445648880817 is 7180888465441.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1342576420416 + 103072460401 = 1158696^2 + 321049^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1445648880817 is a prime.

It is not a weakly prime, because it can be changed into another prime (1445648880827) 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, 722824440408 + 722824440409.

It is an arithmetic number, because the mean of its divisors is an integer number (722824440409).

Almost surely, 2^{1445648880817} is an apocalyptic number.

It is an amenable number.

1445648880817 is a deficient number, since it is larger than the sum of its proper divisors (1).

1445648880817 is an equidigital number, since it uses as much as digits as its factorization.

1445648880817 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 55050240, while the sum is 64.

The spelling of 1445648880817 in words is "one trillion, four hundred forty-five billion, six hundred forty-eight million, eight hundred eighty thousand, eight hundred seventeen".