16534423666 has 16 divisors (see below), whose sum is σ = 25562442528. Its totient is φ = 8016084000.

The previous prime is 16534423663. The next prime is 16534423679. The reversal of 16534423666 is 66632443561.

16534423666 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (16534423663) 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 7 ways as a sum of consecutive naturals, for example, 605160 + ... + 631891.

It is an arithmetic number, because the mean of its divisors is an integer number (1597652658).

Almost surely, 2^16534423666 is an apocalyptic number.

16534423666 is a deficient number, since it is larger than the sum of its proper divisors (9028018862).

16534423666 is a wasteful number, since it uses less digits than its factorization.

16534423666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1237257.

The product of its digits is 1866240, while the sum is 46.

The spelling of 16534423666 in words is "sixteen billion, five hundred thirty-four million, four hundred twenty-three thousand, six hundred sixty-six".