66934289008 has 20 divisors (see below), whose sum is σ = 130032878008. Its totient is φ = 33377417280.

The previous prime is 66934288961. The next prime is 66934289041. The reversal of 66934289008 is 80098243966.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 66934289008.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 5601798 + ... + 5613733.

Almost surely, 2^66934289008 is an apocalyptic number.

It is an amenable number.

66934289008 is a deficient number, since it is larger than the sum of its proper divisors (63098589000).

66934289008 is a wasteful number, since it uses less digits than its factorization.

66934289008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11215912 (or 11215906 counting only the distinct ones).

The product of its (nonzero) digits is 4478976, while the sum is 55.

The spelling of 66934289008 in words is "sixty-six billion, nine hundred thirty-four million, two hundred eighty-nine thousand, eight".