16616016566 has 8 divisors (see below), whose sum is σ = 25004167344. Its totient is φ = 8281294120.

The previous prime is 16616016559. The next prime is 16616016583. The reversal of 16616016566 is 66561061661.

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 (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13356305 + ... + 13357548.

It is an arithmetic number, because the mean of its divisors is an integer number (3125520918).

Almost surely, 2^16616016566 is an apocalyptic number.

16616016566 is a deficient number, since it is larger than the sum of its proper divisors (8388150778).

16616016566 is a wasteful number, since it uses less digits than its factorization.

16616016566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26714166.

The product of its (nonzero) digits is 233280, while the sum is 44.

The spelling of 16616016566 in words is "sixteen billion, six hundred sixteen million, sixteen thousand, five hundred sixty-six".