66673762208 has 12 divisors (see below), whose sum is σ = 131263969410. Its totient is φ = 33336881088.

The previous prime is 66673762157. The next prime is 66673762217. The reversal of 66673762208 is 80226737666.

It can be written as a sum of positive squares in only one way, i.e., 64644079504 + 2029682704 = 254252^2 + 45052^2 .

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 66673762208.

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 as a sum of consecutive naturals, namely, 1041777503 + ... + 1041777566.

Almost surely, 2^66673762208 is an apocalyptic number.

It is an amenable number.

66673762208 is a deficient number, since it is larger than the sum of its proper divisors (64590207202).

66673762208 is a wasteful number, since it uses less digits than its factorization.

66673762208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2083555079 (or 2083555071 counting only the distinct ones).

The product of its (nonzero) digits is 6096384, while the sum is 53.

The spelling of 66673762208 in words is "sixty-six billion, six hundred seventy-three million, seven hundred sixty-two thousand, two hundred eight".