228748068991 has 32 divisors (see below), whose sum is σ = 264311083008. Its totient is φ = 196282880640.

The previous prime is 228748068863. The next prime is 228748069013. The reversal of 228748068991 is 199860847822.

It is a happy number.

228748068991 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 228748068991 - 2⁷ = 228748068863 is a prime.

It is a super-2 number, since 2×228748068991² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228748065991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9801226 + ... + 9824536.

It is an arithmetic number, because the mean of its divisors is an integer number (8259721344).

Almost surely, 2^228748068991 is an apocalyptic number.

228748068991 is a deficient number, since it is larger than the sum of its proper divisors (35563014017).

228748068991 is a wasteful number, since it uses less digits than its factorization.

228748068991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24271.

The product of its (nonzero) digits is 27869184, while the sum is 64.

The spelling of 228748068991 in words is "two hundred twenty-eight billion, seven hundred forty-eight million, sixty-eight thousand, nine hundred ninety-one".