16661144426 has 16 divisors (see below), whose sum is σ = 25594662528. Its totient is φ = 8131914000.

The previous prime is 16661144411. The next prime is 16661144471. The reversal of 16661144426 is 62444116661.

16661144426 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 566510 + ... + 595193.

It is an arithmetic number, because the mean of its divisors is an integer number (1599666408).

Almost surely, 2^16661144426 is an apocalyptic number.

16661144426 is a deficient number, since it is larger than the sum of its proper divisors (8933518102).

16661144426 is a wasteful number, since it uses less digits than its factorization.

16661144426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1161877.

The product of its digits is 165888, while the sum is 41.

The spelling of 16661144426 in words is "sixteen billion, six hundred sixty-one million, one hundred forty-four thousand, four hundred twenty-six".