226166618281 has 2 divisors, whose sum is σ = 226166618282. Its totient is φ = 226166618280.

The previous prime is 226166618263. The next prime is 226166618287. The reversal of 226166618281 is 182816661622.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 219507242256 + 6659376025 = 468516^2 + 81605^2 .

It is a cyclic number.

It is not a de Polignac number, because 226166618281 - 2²³ = 226158229673 is a prime.

It is a super-2 number, since 2×226166618281² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (226166618287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 113083309140 + 113083309141.

It is an arithmetic number, because the mean of its divisors is an integer number (113083309141).

Almost surely, 2^226166618281 is an apocalyptic number.

It is an amenable number.

226166618281 is a deficient number, since it is larger than the sum of its proper divisors (1).

226166618281 is an equidigital number, since it uses as much as digits as its factorization.

226166618281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 663552, while the sum is 49.

The spelling of 226166618281 in words is "two hundred twenty-six billion, one hundred sixty-six million, six hundred eighteen thousand, two hundred eighty-one".