16661651106 has 16 divisors (see below), whose sum is σ = 33515924544. Its totient is φ = 5521779984.

The previous prime is 16661651089. The next prime is 16661651117. The reversal of 16661651106 is 60115616661.

16661651106 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×16661651106² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8024806 + ... + 8026881.

It is an arithmetic number, because the mean of its divisors is an integer number (2094745284).

Almost surely, 2^16661651106 is an apocalyptic number.

16661651106 is an abundant number, since it is smaller than the sum of its proper divisors (16854273438).

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

16661651106 is a wasteful number, since it uses less digits than its factorization.

16661651106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16051865.

The product of its (nonzero) digits is 38880, while the sum is 39.

The spelling of 16661651106 in words is "sixteen billion, six hundred sixty-one million, six hundred fifty-one thousand, one hundred six".