16556665206 has 16 divisors (see below), whose sum is σ = 34008285744. Its totient is φ = 5369729184.

The previous prime is 16556665127. The next prime is 16556665219. The reversal of 16556665206 is 60256665561.

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, 37289565 + ... + 37290008.

It is an arithmetic number, because the mean of its divisors is an integer number (2125517859).

Almost surely, 2^16556665206 is an apocalyptic number.

16556665206 is an abundant number, since it is smaller than the sum of its proper divisors (17451620538).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16556665206 is a wasteful number, since it uses less digits than its factorization.

16556665206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74579615.

The product of its (nonzero) digits is 1944000, while the sum is 48.

The spelling of 16556665206 in words is "sixteen billion, five hundred fifty-six million, six hundred sixty-five thousand, two hundred six".