66673334668 has 12 divisors (see below), whose sum is σ = 116680250512. Its totient is φ = 33336120240.

The previous prime is 66673334653. The next prime is 66673334699. The reversal of 66673334668 is 86643337666.

It is a super-2 number, since 2×66673334668² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 275521 + ... + 457447.

Almost surely, 2^66673334668 is an apocalyptic number.

It is an amenable number.

66673334668 is a deficient number, since it is larger than the sum of its proper divisors (50006915844).

66673334668 is a wasteful number, since it uses less digits than its factorization.

66673334668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273552 (or 273550 counting only the distinct ones).

The product of its digits is 47029248, while the sum is 58.

The spelling of 66673334668 in words is "sixty-six billion, six hundred seventy-three million, three hundred thirty-four thousand, six hundred sixty-eight".