16661616159 has 16 divisors (see below), whose sum is σ = 22938246144. Its totient is φ = 10746556800.

The previous prime is 16661616149. The next prime is 16661616161. The reversal of 16661616159 is 95161616661.

16661616159 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 16661616159 - 2⁴ = 16661616143 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16661616109) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 358567 + ... + 402359.

It is an arithmetic number, because the mean of its divisors is an integer number (1433640384).

Almost surely, 2^16661616159 is an apocalyptic number.

16661616159 is a deficient number, since it is larger than the sum of its proper divisors (6276629985).

16661616159 is a wasteful number, since it uses less digits than its factorization.

16661616159 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47918.

The product of its digits is 349920, while the sum is 48.

The spelling of 16661616159 in words is "sixteen billion, six hundred sixty-one million, six hundred sixteen thousand, one hundred fifty-nine".