16425632666 has 16 divisors (see below), whose sum is σ = 26404545024. Its totient is φ = 7643419344.

The previous prime is 16425632647. The next prime is 16425632681. The reversal of 16425632666 is 66623652461.

It is a happy number.

16425632666 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 16425632666.

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, 4823690 + ... + 4827093.

It is an arithmetic number, because the mean of its divisors is an integer number (1650284064).

Almost surely, 2^16425632666 is an apocalyptic number.

16425632666 is a deficient number, since it is larger than the sum of its proper divisors (9978912358).

16425632666 is a wasteful number, since it uses less digits than its factorization.

16425632666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9650845.

The product of its digits is 1866240, while the sum is 47.

The spelling of 16425632666 in words is "sixteen billion, four hundred twenty-five million, six hundred thirty-two thousand, six hundred sixty-six".