228799065821 has 2 divisors, whose sum is σ = 228799065822. Its totient is φ = 228799065820.

The previous prime is 228799065757. The next prime is 228799065839. The reversal of 228799065821 is 128560997822.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 227324889796 + 1474176025 = 476786^2 + 38395^2 .

It is a cyclic number.

It is not a de Polignac number, because 228799065821 - 2⁶ = 228799065757 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (228793065821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114399532910 + 114399532911.

It is an arithmetic number, because the mean of its divisors is an integer number (114399532911).

Almost surely, 2^228799065821 is an apocalyptic number.

It is an amenable number.

228799065821 is a deficient number, since it is larger than the sum of its proper divisors (1).

228799065821 is an equidigital number, since it uses as much as digits as its factorization.

228799065821 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8709120, while the sum is 59.

The spelling of 228799065821 in words is "two hundred twenty-eight billion, seven hundred ninety-nine million, sixty-five thousand, eight hundred twenty-one".