445666993399 has 2 divisors, whose sum is σ = 445666993400. Its totient is φ = 445666993398.

The previous prime is 445666993391. The next prime is 445666993477. The reversal of 445666993399 is 993399666544.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 445666993399 - 2³ = 445666993391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (445666993391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222833496699 + 222833496700.

It is an arithmetic number, because the mean of its divisors is an integer number (222833496700).

Almost surely, 2^445666993399 is an apocalyptic number.

445666993399 is a deficient number, since it is larger than the sum of its proper divisors (1).

445666993399 is an equidigital number, since it uses as much as digits as its factorization.

445666993399 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1020366720, while the sum is 73.

The spelling of 445666993399 in words is "four hundred forty-five billion, six hundred sixty-six million, nine hundred ninety-three thousand, three hundred ninety-nine".