666641204433773 has 8 divisors (see below), whose sum is σ = 671877346119936. Its totient is φ = 661407294225600.

The previous prime is 666641204433769. The next prime is 666641204433781. The reversal of 666641204433773 is 377334402146666.

666641204433773 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 666641204433773 - 2² = 666641204433769 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (666641204433703) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 557269661 + ... + 558464642.

It is an arithmetic number, because the mean of its divisors is an integer number (83984668264992).

Almost surely, 2^{666641204433773} is an apocalyptic number.

It is an amenable number.

666641204433773 is a deficient number, since it is larger than the sum of its proper divisors (5236141686163).

666641204433773 is a wasteful number, since it uses less digits than its factorization.

666641204433773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1115738995.

The product of its (nonzero) digits is 219469824, while the sum is 62.

The spelling of 666641204433773 in words is "six hundred sixty-six trillion, six hundred forty-one billion, two hundred four million, four hundred thirty-three thousand, seven hundred seventy-three".