228928968944129 has 2 divisors, whose sum is σ = 228928968944130. Its totient is φ = 228928968944128.

The previous prime is 228928968944101. The next prime is 228928968944131. The reversal of 228928968944129 is 921449869829822.

228928968944129 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 196151649322225 + 32777319621904 = 14005415^2 + 5725148^2 .

It is a cyclic number.

It is not a de Polignac number, because 228928968944129 - 2¹⁶ = 228928968878593 is a prime.

It is a Sophie Germain prime.

Together with 228928968944131, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (228928968944189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114464484472064 + 114464484472065.

It is an arithmetic number, because the mean of its divisors is an integer number (114464484472065).

Almost surely, 2^{228928968944129} is an apocalyptic number.

It is an amenable number.

228928968944129 is a deficient number, since it is larger than the sum of its proper divisors (1).

228928968944129 is an equidigital number, since it uses as much as digits as its factorization.

228928968944129 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5159780352, while the sum is 83.

The spelling of 228928968944129 in words is "two hundred twenty-eight trillion, nine hundred twenty-eight billion, nine hundred sixty-eight million, nine hundred forty-four thousand, one hundred twenty-nine".