73666733670329 has 2 divisors, whose sum is σ = 73666733670330. Its totient is φ = 73666733670328.

The previous prime is 73666733670323. The next prime is 73666733670349. The reversal of 73666733670329 is 92307633766637.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37908402720400 + 35758330949929 = 6156980^2 + 5979827^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-73666733670329 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (73666733670323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36833366835164 + 36833366835165.

It is an arithmetic number, because the mean of its divisors is an integer number (36833366835165).

Almost surely, 2^{73666733670329} is an apocalyptic number.

It is an amenable number.

73666733670329 is a deficient number, since it is larger than the sum of its proper divisors (1).

73666733670329 is an equidigital number, since it uses as much as digits as its factorization.

73666733670329 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648121824, while the sum is 68.

The spelling of 73666733670329 in words is "seventy-three trillion, six hundred sixty-six billion, seven hundred thirty-three million, six hundred seventy thousand, three hundred twenty-nine".