66684900330767 has 2 divisors, whose sum is σ = 66684900330768. Its totient is φ = 66684900330766.

The previous prime is 66684900330679. The next prime is 66684900330781. The reversal of 66684900330767 is 76703300948666.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66684900330767 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66684900339767) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33342450165383 + 33342450165384.

It is an arithmetic number, because the mean of its divisors is an integer number (33342450165384).

Almost surely, 2^{66684900330767} is an apocalyptic number.

66684900330767 is a deficient number, since it is larger than the sum of its proper divisors (1).

66684900330767 is an equidigital number, since it uses as much as digits as its factorization.

66684900330767 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 164602368, while the sum is 65.

The spelling of 66684900330767 in words is "sixty-six trillion, six hundred eighty-four billion, nine hundred million, three hundred thirty thousand, seven hundred sixty-seven".