228781743208717 has 2 divisors, whose sum is σ = 228781743208718. Its totient is φ = 228781743208716.

The previous prime is 228781743208673. The next prime is 228781743208763. The reversal of 228781743208717 is 717802347187822.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 219676684392036 + 9105058816681 = 14821494^2 + 3017459^2 .

It is a cyclic number.

It is not a de Polignac number, because 228781743208717 - 2³⁵ = 228747383470349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (228781743209717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114390871604358 + 114390871604359.

It is an arithmetic number, because the mean of its divisors is an integer number (114390871604359).

Almost surely, 2^{228781743208717} is an apocalyptic number.

It is an amenable number.

228781743208717 is a deficient number, since it is larger than the sum of its proper divisors (1).

228781743208717 is an equidigital number, since it uses as much as digits as its factorization.

228781743208717 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 118013952, while the sum is 67.

The spelling of 228781743208717 in words is "two hundred twenty-eight trillion, seven hundred eighty-one billion, seven hundred forty-three million, two hundred eight thousand, seven hundred seventeen".