16564180704 has 48 divisors (see below), whose sum is σ = 43576234128. Its totient is φ = 5509297152.

The previous prime is 16564180691. The next prime is 16564180723. The reversal of 16564180704 is 40708146561.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

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, 144907 + ... + 232650.

It is an arithmetic number, because the mean of its divisors is an integer number (907838211).

Almost surely, 2^16564180704 is an apocalyptic number.

It is an amenable number.

16564180704 is an abundant number, since it is smaller than the sum of its proper divisors (27012053424).

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

16564180704 is a wasteful number, since it uses less digits than its factorization.

16564180704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 378027 (or 378019 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 42.

The spelling of 16564180704 in words is "sixteen billion, five hundred sixty-four million, one hundred eighty thousand, seven hundred four".