66300073073 has 8 divisors (see below), whose sum is σ = 73141544616. Its totient is φ = 59707382400.

The previous prime is 66300073069. The next prime is 66300073087. The reversal of 66300073073 is 37037000366.

It can be written as a sum of positive squares in 4 ways, for example, as 8389094464 + 57910978609 = 91592^2 + 240647^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 66300073073 - 2² = 66300073069 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66300073573) 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, 62194658 + ... + 62195723.

It is an arithmetic number, because the mean of its divisors is an integer number (9142693077).

Almost surely, 2^66300073073 is an apocalyptic number.

It is an amenable number.

66300073073 is a deficient number, since it is larger than the sum of its proper divisors (6841471543).

66300073073 is a wasteful number, since it uses less digits than its factorization.

66300073073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124390435.

The product of its (nonzero) digits is 47628, while the sum is 35.

The spelling of 66300073073 in words is "sixty-six billion, three hundred million, seventy-three thousand, seventy-three".