16066661605615 has 8 divisors (see below), whose sum is σ = 19280171224080. Its totient is φ = 12853211086272.

The previous prime is 16066661605597. The next prime is 16066661605637. The reversal of 16066661605615 is 51650616666061.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16066661605615 - 2⁷ = 16066661605487 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14174470 + ... + 15265939.

It is an arithmetic number, because the mean of its divisors is an integer number (2410021403010).

Almost surely, 2^{16066661605615} is an apocalyptic number.

16066661605615 is a deficient number, since it is larger than the sum of its proper divisors (3213509618465).

16066661605615 is a wasteful number, since it uses less digits than its factorization.

16066661605615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29549561.

The product of its (nonzero) digits is 6998400, while the sum is 55.

The spelling of 16066661605615 in words is "sixteen trillion, sixty-six billion, six hundred sixty-one million, six hundred five thousand, six hundred fifteen".