445766221656199 has 2 divisors, whose sum is σ = 445766221656200. Its totient is φ = 445766221656198.

The previous prime is 445766221656187. The next prime is 445766221656227. The reversal of 445766221656199 is 991656122667544.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 445766221656199 - 2²⁷ = 445766087438471 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (445766221636199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222883110828099 + 222883110828100.

It is an arithmetic number, because the mean of its divisors is an integer number (222883110828100).

Almost surely, 2^{445766221656199} is an apocalyptic number.

445766221656199 is a deficient number, since it is larger than the sum of its proper divisors (1).

445766221656199 is an equidigital number, since it uses as much as digits as its factorization.

445766221656199 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1175731200, while the sum is 73.

The spelling of 445766221656199 in words is "four hundred forty-five trillion, seven hundred sixty-six billion, two hundred twenty-one million, six hundred fifty-six thousand, one hundred ninety-nine".