445445320653616 has 80 divisors (see below), whose sum is σ = 898343429146240. Its totient is φ = 213781872844800.

The previous prime is 445445320653559. The next prime is 445445320653659. The reversal of 445445320653616 is 616356023544544.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52203100 + ... + 60133636.

It is an arithmetic number, because the mean of its divisors is an integer number (11229292864328).

Almost surely, 2^{445445320653616} is an apocalyptic number.

It is an amenable number.

445445320653616 is an abundant number, since it is smaller than the sum of its proper divisors (452898108492624).

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

445445320653616 is a wasteful number, since it uses less digits than its factorization.

445445320653616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7931862 (or 7931856 counting only the distinct ones).

The product of its (nonzero) digits is 124416000, while the sum is 58.

The spelling of 445445320653616 in words is "four hundred forty-five trillion, four hundred forty-five billion, three hundred twenty million, six hundred fifty-three thousand, six hundred sixteen".