66679654600 has 192 divisors, whose sum is σ = 174068858880. Its totient is φ = 23587200000.

The previous prime is 66679654577. The next prime is 66679654621. The reversal of 66679654600 is 645697666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8136505 + ... + 8144695.

It is an arithmetic number, because the mean of its divisors is an integer number (906608640).

Almost surely, 2^66679654600 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66679654600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87034429440).

66679654600 is an abundant number, since it is smaller than the sum of its proper divisors (107389204280).

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

66679654600 is a wasteful number, since it uses less digits than its factorization.

66679654600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8352 (or 8343 counting only the distinct ones).

The product of its (nonzero) digits is 9797760, while the sum is 55.

The spelling of 66679654600 in words is "sixty-six billion, six hundred seventy-nine million, six hundred fifty-four thousand, six hundred".