445141487221 has 2 divisors, whose sum is σ = 445141487222. Its totient is φ = 445141487220.

The previous prime is 445141487159. The next prime is 445141487281. The reversal of 445141487221 is 122784141544.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 299087578321 + 146053908900 = 546889^2 + 382170^2 .

It is a cyclic number.

It is not a de Polignac number, because 445141487221 - 2⁷ = 445141487093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (445141487281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222570743610 + 222570743611.

It is an arithmetic number, because the mean of its divisors is an integer number (222570743611).

Almost surely, 2^445141487221 is an apocalyptic number.

It is an amenable number.

445141487221 is a deficient number, since it is larger than the sum of its proper divisors (1).

445141487221 is an equidigital number, since it uses as much as digits as its factorization.

445141487221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 286720, while the sum is 43.

The spelling of 445141487221 in words is "four hundred forty-five billion, one hundred forty-one million, four hundred eighty-seven thousand, two hundred twenty-one".