228266406666 has 20 divisors (see below), whose sum is σ = 511485837522. Its totient is φ = 76088802168.

The previous prime is 228266406661. The next prime is 228266406721. The reversal of 228266406666 is 666604662822.

228266406666 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 228224997441 + 41409225 = 477729^2 + 6435^2 .

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (228266406661) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 704525785 + ... + 704526108.

Almost surely, 2^228266406666 is an apocalyptic number.

228266406666 is an abundant number, since it is smaller than the sum of its proper divisors (283219430856).

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

228266406666 is a wasteful number, since it uses less digits than its factorization.

228266406666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1409051907 (or 1409051898 counting only the distinct ones).

The product of its (nonzero) digits is 11943936, while the sum is 54.

The spelling of 228266406666 in words is "two hundred twenty-eight billion, two hundred sixty-six million, four hundred six thousand, six hundred sixty-six".