445766221656127 has 2 divisors, whose sum is σ = 445766221656128. Its totient is φ = 445766221656126.

The previous prime is 445766221656047. The next prime is 445766221656181. The reversal of 445766221656127 is 721656122667544.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-445766221656127 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (445766221656187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222883110828063 + 222883110828064.

It is an arithmetic number, because the mean of its divisors is an integer number (222883110828064).

Almost surely, 2^{445766221656127} is an apocalyptic number.

445766221656127 is a deficient number, since it is larger than the sum of its proper divisors (1).

445766221656127 is an equidigital number, since it uses as much as digits as its factorization.

445766221656127 is an evil number, because the sum of its binary digits is even.

The product of its digits is 203212800, while the sum is 64.

The spelling of 445766221656127 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 twenty-seven".