1663552460441 has 2 divisors, whose sum is σ = 1663552460442. Its totient is φ = 1663552460440.

The previous prime is 1663552460429. The next prime is 1663552460443. The reversal of 1663552460441 is 1440642553661.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1526944604416 + 136607856025 = 1235696^2 + 369605^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1663552460441 is a prime.

Together with 1663552460443, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1663552460443) 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, 831776230220 + 831776230221.

It is an arithmetic number, because the mean of its divisors is an integer number (831776230221).

Almost surely, 2^{1663552460441} is an apocalyptic number.

It is an amenable number.

1663552460441 is a deficient number, since it is larger than the sum of its proper divisors (1).

1663552460441 is an equidigital number, since it uses as much as digits as its factorization.

1663552460441 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2073600, while the sum is 47.

The spelling of 1663552460441 in words is "one trillion, six hundred sixty-three billion, five hundred fifty-two million, four hundred sixty thousand, four hundred forty-one".