445461529221 has 12 divisors (see below), whose sum is σ = 658408255648. Its totient is φ = 290067972264.

The previous prime is 445461529187. The next prime is 445461529237. The reversal of 445461529221 is 122925164544.

445461529221 is a `hidden beast` number, since 4 + 4 + 5 + 4 + 615 + 2 + 9 + 2 + 21 = 666.

It is not a de Polignac number, because 445461529221 - 2¹⁸ = 445461267077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (445461529241) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 575531305 + ... + 575532078.

Almost surely, 2^445461529221 is an apocalyptic number.

It is an amenable number.

445461529221 is a deficient number, since it is larger than the sum of its proper divisors (212946726427).

445461529221 is a wasteful number, since it uses less digits than its factorization.

445461529221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1151063432 (or 1151063429 counting only the distinct ones).

The product of its digits is 691200, while the sum is 45.

The spelling of 445461529221 in words is "four hundred forty-five billion, four hundred sixty-one million, five hundred twenty-nine thousand, two hundred twenty-one".