16320447220457 has 16 divisors (see below), whose sum is σ = 17070659760000. Its totient is φ = 15603145086672.

The previous prime is 16320447220433. The next prime is 16320447220481. The reversal of 16320447220457 is 75402274402361.

It is an interprime number because it is at equal distance from previous prime (16320447220433) and next prime (16320447220481).

It is not a de Polignac number, because 16320447220457 - 2¹² = 16320447216361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16320447220057) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24356294 + ... + 25017392.

It is an arithmetic number, because the mean of its divisors is an integer number (1066916235000).

Almost surely, 2^{16320447220457} is an apocalyptic number.

It is an amenable number.

16320447220457 is a deficient number, since it is larger than the sum of its proper divisors (750212539543).

16320447220457 is an frugal number, since it uses more digits than its factorization.

16320447220457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 663197 (or 663151 counting only the distinct ones).

The product of its (nonzero) digits is 2257920, while the sum is 47.

The spelling of 16320447220457 in words is "sixteen trillion, three hundred twenty billion, four hundred forty-seven million, two hundred twenty thousand, four hundred fifty-seven".