219866668912 has 80 divisors (see below), whose sum is σ = 469632129120. Its totient is φ = 98883968000.

The previous prime is 219866668799. The next prime is 219866668919.

219866668912 is nontrivially palindromic in base 10.

219866668912 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (219866668919) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35068914 + ... + 35075182.

It is an arithmetic number, because the mean of its divisors is an integer number (5870401614).

Almost surely, 2^219866668912 is an apocalyptic number.

219866668912 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 219866668912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (234816064560).

219866668912 is an abundant number, since it is smaller than the sum of its proper divisors (249765460208).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

219866668912 is a wasteful number, since it uses less digits than its factorization.

219866668912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8362 (or 8356 counting only the distinct ones).

The product of its digits is 26873856, while the sum is 64.

The spelling of 219866668912 in words is "two hundred nineteen billion, eight hundred sixty-six million, six hundred sixty-eight thousand, nine hundred twelve".