16066501551566 has 8 divisors (see below), whose sum is σ = 24151803629664. Its totient is φ = 8015900341680.

The previous prime is 16066501551553. The next prime is 16066501551613. The reversal of 16066501551566 is 66515510566061.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8675215895 + ... + 8675217746.

It is an arithmetic number, because the mean of its divisors is an integer number (3018975453708).

Almost surely, 2^{16066501551566} is an apocalyptic number.

16066501551566 is a deficient number, since it is larger than the sum of its proper divisors (8085302078098).

16066501551566 is a wasteful number, since it uses less digits than its factorization.

16066501551566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17350434106.

The product of its (nonzero) digits is 4860000, while the sum is 53.

The spelling of 16066501551566 in words is "sixteen trillion, sixty-six billion, five hundred one million, five hundred fifty-one thousand, five hundred sixty-six".