1445662386481 has 2 divisors, whose sum is σ = 1445662386482. Its totient is φ = 1445662386480.

The previous prime is 1445662386431. The next prime is 1445662386503. The reversal of 1445662386481 is 1846832665441.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1162655410225 + 283006976256 = 1078265^2 + 531984^2 .

It is a cyclic number.

It is not a de Polignac number, because 1445662386481 - 2¹⁵ = 1445662353713 is a prime.

It is a super-2 number, since 2×1445662386481² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1445662386401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 722831193240 + 722831193241.

It is an arithmetic number, because the mean of its divisors is an integer number (722831193241).

Almost surely, 2^{1445662386481} is an apocalyptic number.

It is an amenable number.

1445662386481 is a deficient number, since it is larger than the sum of its proper divisors (1).

1445662386481 is an equidigital number, since it uses as much as digits as its factorization.

1445662386481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 26542080, while the sum is 58.

The spelling of 1445662386481 in words is "one trillion, four hundred forty-five billion, six hundred sixty-two million, three hundred eighty-six thousand, four hundred eighty-one".