66468818773 has 8 divisors (see below), whose sum is σ = 76071512960. Its totient is φ = 56892911760.

The previous prime is 66468818747. The next prime is 66468818813. The reversal of 66468818773 is 37781886466.

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 66468818773 - 2¹³ = 66468810581 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 (66468818723) 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, 6691473 + ... + 6701398.

It is an arithmetic number, because the mean of its divisors is an integer number (9508939120).

Almost surely, 2^66468818773 is an apocalyptic number.

It is an amenable number.

66468818773 is a deficient number, since it is larger than the sum of its proper divisors (9602694187).

66468818773 is a wasteful number, since it uses less digits than its factorization.

66468818773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13393587.

The product of its digits is 65028096, while the sum is 64.

The spelling of 66468818773 in words is "sixty-six billion, four hundred sixty-eight million, eight hundred eighteen thousand, seven hundred seventy-three".