219688351066 has 8 divisors (see below), whose sum is σ = 335117823840. Its totient is φ = 107982409788.

The previous prime is 219688351063. The next prime is 219688351073. The reversal of 219688351066 is 660153886912.

219688351066 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 219688350998 and 219688351016.

It is not an unprimeable number, because it can be changed into a prime (219688351061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 930882726 + ... + 930882961.

It is an arithmetic number, because the mean of its divisors is an integer number (41889727980).

Almost surely, 2^219688351066 is an apocalyptic number.

219688351066 is a deficient number, since it is larger than the sum of its proper divisors (115429472774).

219688351066 is a wasteful number, since it uses less digits than its factorization.

219688351066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1861765748.

The product of its (nonzero) digits is 3732480, while the sum is 55.

The spelling of 219688351066 in words is "two hundred nineteen billion, six hundred eighty-eight million, three hundred fifty-one thousand, sixty-six".