16610566623 has 32 divisors (see below), whose sum is σ = 25658572800. Its totient is φ = 9361793376.

The previous prime is 16610566619. The next prime is 16610566717. The reversal of 16610566623 is 32666501661.

It is not a de Polignac number, because 16610566623 - 2² = 16610566619 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16610566603) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 1758808 + ... + 1768226.

It is an arithmetic number, because the mean of its divisors is an integer number (801830400).

Almost surely, 2^16610566623 is an apocalyptic number.

16610566623 is a deficient number, since it is larger than the sum of its proper divisors (9048006177).

16610566623 is a wasteful number, since it uses less digits than its factorization.

16610566623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10571.

The product of its (nonzero) digits is 233280, while the sum is 42.

The spelling of 16610566623 in words is "sixteen billion, six hundred ten million, five hundred sixty-six thousand, six hundred twenty-three".