16400565228 has 24 divisors (see below), whose sum is σ = 39587572080. Its totient is φ = 5278342720.

The previous prime is 16400565169. The next prime is 16400565229. The reversal of 16400565228 is 82256500461.

It is not an unprimeable number, because it can be changed into a prime (16400565229) 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, 23563683 + ... + 23564378.

It is an arithmetic number, because the mean of its divisors is an integer number (1649482170).

Almost surely, 2^16400565228 is an apocalyptic number.

It is an amenable number.

16400565228 is an abundant number, since it is smaller than the sum of its proper divisors (23187006852).

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

16400565228 is a wasteful number, since it uses less digits than its factorization.

16400565228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47128097 (or 47128095 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 39.

The spelling of 16400565228 in words is "sixteen billion, four hundred million, five hundred sixty-five thousand, two hundred twenty-eight".