16066661605504 has 32 divisors (see below), whose sum is σ = 32008235941440. Its totient is φ = 8033221996800.

The previous prime is 16066661605487. The next prime is 16066661605597. The reversal of 16066661605504 is 40550616666061.

It is a tau number, because it is divible by the number of its divisors (32).

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 3 ways as a sum of consecutive naturals, for example, 9089557 + ... + 10712299.

It is an arithmetic number, because the mean of its divisors is an integer number (1000257373170).

Almost surely, 2^{16066661605504} is an apocalyptic number.

It is an amenable number.

16066661605504 is a deficient number, since it is larger than the sum of its proper divisors (15941574335936).

16066661605504 is an equidigital number, since it uses as much as digits as its factorization.

16066661605504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1700108 (or 1700096 counting only the distinct ones).

The product of its (nonzero) digits is 4665600, while the sum is 52.

The spelling of 16066661605504 in words is "sixteen trillion, sixty-six billion, six hundred sixty-one million, six hundred five thousand, five hundred four".