66084720073 has 8 divisors (see below), whose sum is σ = 66206730240. Its totient is φ = 65962818240.

The previous prime is 66084720067. The next prime is 66084720113. The reversal of 66084720073 is 37002748066.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66084720073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66084720043) 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, 1248888 + ... + 1300726.

It is an arithmetic number, because the mean of its divisors is an integer number (8275841280).

Almost surely, 2^66084720073 is an apocalyptic number.

It is an amenable number.

66084720073 is a deficient number, since it is larger than the sum of its proper divisors (122010167).

66084720073 is a wasteful number, since it uses less digits than its factorization.

66084720073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54167.

The product of its (nonzero) digits is 338688, while the sum is 43.

The spelling of 66084720073 in words is "sixty-six billion, eighty-four million, seven hundred twenty thousand, seventy-three".