228748068891 has 6 divisors (see below), whose sum is σ = 330413877300. Its totient is φ = 152498712588.

The previous prime is 228748068863. The next prime is 228748069013. The reversal of 228748068891 is 198860847822.

228748068891 is a `hidden beast` number, since 2 + 2 + 8 + 7 + 480 + 68 + 8 + 91 = 666.

It is not a de Polignac number, because 228748068891 - 2¹⁵ = 228748036123 is a prime.

It is not an unprimeable number, because it can be changed into a prime (228748066891) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12708226041 + ... + 12708226058.

It is an arithmetic number, because the mean of its divisors is an integer number (55068979550).

Almost surely, 2^228748068891 is an apocalyptic number.

228748068891 is a deficient number, since it is larger than the sum of its proper divisors (101665808409).

228748068891 is a wasteful number, since it uses less digits than its factorization.

228748068891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25416452105 (or 25416452102 counting only the distinct ones).

The product of its (nonzero) digits is 24772608, while the sum is 63.

The spelling of 228748068891 in words is "two hundred twenty-eight billion, seven hundred forty-eight million, sixty-eight thousand, eight hundred ninety-one".