268568441329 has 4 divisors (see below), whose sum is σ = 268635570660. Its totient is φ = 268501312000.

The previous prime is 268568441327. The next prime is 268568441347. The reversal of 268568441329 is 923144865862.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 923144865862 = 2 ⋅461572432931.

It can be written as a sum of positive squares in 2 ways, for example, as 5350191025 + 263218250304 = 73145^2 + 513048^2 .

It is a cyclic number.

It is not a de Polignac number, because 268568441329 - 2¹ = 268568441327 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (268568441327) 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 in 3 ways as a sum of consecutive naturals, for example, 33558664 + ... + 33566665.

It is an arithmetic number, because the mean of its divisors is an integer number (67158892665).

Almost surely, 2^268568441329 is an apocalyptic number.

It is an amenable number.

268568441329 is a deficient number, since it is larger than the sum of its proper divisors (67129331).

268568441329 is an equidigital number, since it uses as much as digits as its factorization.

268568441329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67129330.

The product of its digits is 19906560, while the sum is 58.

The spelling of 268568441329 in words is "two hundred sixty-eight billion, five hundred sixty-eight million, four hundred forty-one thousand, three hundred twenty-nine".