16564703616416 has 48 divisors (see below), whose sum is σ = 33407781228360. Its totient is φ = 8080195153920.

The previous prime is 16564703616401. The next prime is 16564703616491. The reversal of 16564703616416 is 61461630746561.

It can be written as a sum of positive squares in 4 ways, for example, as 4285314010000 + 12279389606416 = 2070100^2 + 3504196^2 .

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 115606130 + ... + 115749326.

Almost surely, 2^{16564703616416} is an apocalyptic number.

16564703616416 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

16564703616416 is an abundant number, since it is smaller than the sum of its proper divisors (16843077611944).

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

16564703616416 is a wasteful number, since it uses less digits than its factorization.

16564703616416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231417 (or 231409 counting only the distinct ones).

The product of its (nonzero) digits is 13063680, while the sum is 56.

The spelling of 16564703616416 in words is "sixteen trillion, five hundred sixty-four billion, seven hundred three million, six hundred sixteen thousand, four hundred sixteen".