445445221408 has 24 divisors (see below), whose sum is σ = 956694851280. Its totient is φ = 202475100480.

The previous prime is 445445221399. The next prime is 445445221409. The reversal of 445445221408 is 804122544544.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (445445221409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 632734338 + ... + 632735041.

It is an arithmetic number, because the mean of its divisors is an integer number (39862285470).

Almost surely, 2^445445221408 is an apocalyptic number.

It is an amenable number.

445445221408 is an abundant number, since it is smaller than the sum of its proper divisors (511249629872).

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

445445221408 is a wasteful number, since it uses less digits than its factorization.

445445221408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1265469400 (or 1265469392 counting only the distinct ones).

The product of its (nonzero) digits is 819200, while the sum is 43.

The spelling of 445445221408 in words is "four hundred forty-five billion, four hundred forty-five million, two hundred twenty-one thousand, four hundred eight".