14228620866 has 60 divisors (see below), whose sum is σ = 33772958802. Its totient is φ = 4461917184.

The previous prime is 14228620859. The next prime is 14228620873. The reversal of 14228620866 is 66802682241.

14228620866 is a `hidden beast` number, since 14 + 2 + 2 + 8 + 620 + 8 + 6 + 6 = 666.

It is an interprime number because it is at equal distance from previous prime (14228620859) and next prime (14228620873).

It can be written as a sum of positive squares in 3 ways, for example, as 13649015241 + 579605625 = 116829^2 + 24075^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 6258706 + ... + 6260978.

Almost surely, 2^14228620866 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 14228620866, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16886479401).

14228620866 is an abundant number, since it is smaller than the sum of its proper divisors (19544337936).

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

14228620866 is an frugal number, since it uses more digits than its factorization.

14228620866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4577 (or 2295 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 45.

The spelling of 14228620866 in words is "fourteen billion, two hundred twenty-eight million, six hundred twenty thousand, eight hundred sixty-six".