68453331666 has 8 divisors (see below), whose sum is σ = 136906663344. Its totient is φ = 22817777220.

The previous prime is 68453331649. The next prime is 68453331679. The reversal of 68453331666 is 66613335486.

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

68453331666 is an admirable number.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5704444300 + ... + 5704444311.

It is an arithmetic number, because the mean of its divisors is an integer number (17113332918).

Almost surely, 2^68453331666 is an apocalyptic number.

68453331666 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68453331666 is a wasteful number, since it uses less digits than its factorization.

68453331666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11408888616.

The product of its digits is 5598720, while the sum is 51.

The spelling of 68453331666 in words is "sixty-eight billion, four hundred fifty-three million, three hundred thirty-one thousand, six hundred sixty-six".