2128369216 has 56 divisors (see below), whose sum is σ = 4417649280. Its totient is φ = 1015483392.

The previous prime is 2128369169. The next prime is 2128369219. The reversal of 2128369216 is 6129638212.

It is not an unprimeable number, because it can be changed into a prime (2128369219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 715380 + ... + 718348.

Almost surely, 2^2128369216 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2128369216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2208824640).

2128369216 is an abundant number, since it is smaller than the sum of its proper divisors (2289280064).

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

2128369216 is a wasteful number, since it uses less digits than its factorization.

2128369216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3491 (or 3481 counting only the distinct ones).

The product of its digits is 62208, while the sum is 40.

The square root of 2128369216 is about 46134.2520910440. The cubic root of 2128369216 is about 1286.3199034517.

The spelling of 2128369216 in words is "two billion, one hundred twenty-eight million, three hundred sixty-nine thousand, two hundred sixteen".