226666516129 has 2 divisors, whose sum is σ = 226666516130. Its totient is φ = 226666516128.

The previous prime is 226666516121. The next prime is 226666516159. The reversal of 226666516129 is 921615666622.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 196745473600 + 29921042529 = 443560^2 + 172977^2 .

It is a cyclic number.

It is not a de Polignac number, because 226666516129 - 2³ = 226666516121 is a prime.

It is not a weakly prime, because it can be changed into another prime (226666516121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 113333258064 + 113333258065.

It is an arithmetic number, because the mean of its divisors is an integer number (113333258065).

Almost surely, 2^226666516129 is an apocalyptic number.

It is an amenable number.

226666516129 is a deficient number, since it is larger than the sum of its proper divisors (1).

226666516129 is an equidigital number, since it uses as much as digits as its factorization.

226666516129 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2799360, while the sum is 52.

The spelling of 226666516129 in words is "two hundred twenty-six billion, six hundred sixty-six million, five hundred sixteen thousand, one hundred twenty-nine".