444663466685563 has 2 divisors, whose sum is σ = 444663466685564. Its totient is φ = 444663466685562.

The previous prime is 444663466685561. The next prime is 444663466685671. The reversal of 444663466685563 is 365586664366444.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 444663466685563 - 2¹ = 444663466685561 is a prime.

Together with 444663466685561, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 444663466685563.

It is not a weakly prime, because it can be changed into another prime (444663466685561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222331733342781 + 222331733342782.

It is an arithmetic number, because the mean of its divisors is an integer number (222331733342782).

Almost surely, 2^{444663466685563} is an apocalyptic number.

444663466685563 is a deficient number, since it is larger than the sum of its proper divisors (1).

444663466685563 is an equidigital number, since it uses as much as digits as its factorization.

444663466685563 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21499084800, while the sum is 76.

The spelling of 444663466685563 in words is "four hundred forty-four trillion, six hundred sixty-three billion, four hundred sixty-six million, six hundred eighty-five thousand, five hundred sixty-three".