1445456513161 has 2 divisors, whose sum is σ = 1445456513162. Its totient is φ = 1445456513160.

The previous prime is 1445456513143. The next prime is 1445456513197. The reversal of 1445456513161 is 1613156545441.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1377233685136 + 68222828025 = 1173556^2 + 261195^2 .

It is a cyclic number.

It is not a de Polignac number, because 1445456513161 - 2⁹ = 1445456512649 is a prime.

It is not a weakly prime, because it can be changed into another prime (1445456513141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 722728256580 + 722728256581.

It is an arithmetic number, because the mean of its divisors is an integer number (722728256581).

Almost surely, 2^{1445456513161} is an apocalyptic number.

It is an amenable number.

1445456513161 is a deficient number, since it is larger than the sum of its proper divisors (1).

1445456513161 is an equidigital number, since it uses as much as digits as its factorization.

1445456513161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 864000, while the sum is 46.

The spelling of 1445456513161 in words is "one trillion, four hundred forty-five billion, four hundred fifty-six million, five hundred thirteen thousand, one hundred sixty-one".