444663466686623 has 2 divisors, whose sum is σ = 444663466686624. Its totient is φ = 444663466686622.

The previous prime is 444663466686587. The next prime is 444663466686653. The reversal of 444663466686623 is 326686664366444.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 444663466686623 - 2⁶ = 444663466686559 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (444663466686653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222331733343311 + 222331733343312.

It is an arithmetic number, because the mean of its divisors is an integer number (222331733343312).

Almost surely, 2^{444663466686623} is an apocalyptic number.

444663466686623 is a deficient number, since it is larger than the sum of its proper divisors (1).

444663466686623 is an equidigital number, since it uses as much as digits as its factorization.

444663466686623 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10319560704, while the sum is 74.

The spelling of 444663466686623 in words is "four hundred forty-four trillion, six hundred sixty-three billion, four hundred sixty-six million, six hundred eighty-six thousand, six hundred twenty-three".