238446266856289 has 2 divisors, whose sum is σ = 238446266856290. Its totient is φ = 238446266856288.

The previous prime is 238446266856283. The next prime is 238446266856463. The reversal of 238446266856289 is 982658662644832.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 177028559923264 + 61417706933025 = 13305208^2 + 7836945^2 .

It is a cyclic number.

It is not a de Polignac number, because 238446266856289 - 2²⁷ = 238446132638561 is a prime.

It is not a weakly prime, because it can be changed into another prime (238446266856283) 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, 119223133428144 + 119223133428145.

It is an arithmetic number, because the mean of its divisors is an integer number (119223133428145).

Almost surely, 2^{238446266856289} is an apocalyptic number.

It is an amenable number.

238446266856289 is a deficient number, since it is larger than the sum of its proper divisors (1).

238446266856289 is an equidigital number, since it uses as much as digits as its factorization.

238446266856289 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11466178560, while the sum is 79.

The spelling of 238446266856289 in words is "two hundred thirty-eight trillion, four hundred forty-six billion, two hundred sixty-six million, eight hundred fifty-six thousand, two hundred eighty-nine".