668239596884289 has 8 divisors (see below), whose sum is σ = 890986544528992. Its totient is φ = 445492856914560.

The previous prime is 668239596884281. The next prime is 668239596884383. The reversal of 668239596884289 is 982488695932866.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 668239596884289 - 2³ = 668239596884281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (668239596884281) 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 7 ways as a sum of consecutive naturals, for example, 44248867 + ... + 57397224.

It is an arithmetic number, because the mean of its divisors is an integer number (111373318066124).

Almost surely, 2^{668239596884289} is an apocalyptic number.

It is an amenable number.

668239596884289 is a deficient number, since it is larger than the sum of its proper divisors (222746947644703).

668239596884289 is a wasteful number, since it uses less digits than its factorization.

668239596884289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103837487.

The product of its digits is 154793410560, while the sum is 93.

The spelling of 668239596884289 in words is "six hundred sixty-eight trillion, two hundred thirty-nine billion, five hundred ninety-six million, eight hundred eighty-four thousand, two hundred eighty-nine".