445431021084 has 72 divisors (see below), whose sum is σ = 1288636903008. Its totient is φ = 127084406400.

The previous prime is 445431021083. The next prime is 445431021097. The reversal of 445431021084 is 480120134544.

445431021084 is a `hidden beast` number, since 4 + 4 + 5 + 431 + 0 + 210 + 8 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (445431021083) 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 in 23 ways as a sum of consecutive naturals, for example, 1084107 + ... + 1437410.

It is an arithmetic number, because the mean of its divisors is an integer number (17897734764).

Almost surely, 2^445431021084 is an apocalyptic number.

It is an amenable number.

445431021084 is an abundant number, since it is smaller than the sum of its proper divisors (843205881924).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

445431021084 is a wasteful number, since it uses less digits than its factorization.

445431021084 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2522235 (or 2522230 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 36.

The spelling of 445431021084 in words is "four hundred forty-five billion, four hundred thirty-one million, twenty-one thousand, eighty-four".