1666673434267 has 2 divisors, whose sum is σ = 1666673434268. Its totient is φ = 1666673434266.

The previous prime is 1666673434259. The next prime is 1666673434313. The reversal of 1666673434267 is 7624343766661.

It is a weak prime.

It is an emirp because it is prime and its reverse (7624343766661) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1666673434267 - 2³ = 1666673434259 is a prime.

It is not a weakly prime, because it can be changed into another prime (1666673434067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 833336717133 + 833336717134.

It is an arithmetic number, because the mean of its divisors is an integer number (833336717134).

Almost surely, 2^{1666673434267} is an apocalyptic number.

1666673434267 is a deficient number, since it is larger than the sum of its proper divisors (1).

1666673434267 is an equidigital number, since it uses as much as digits as its factorization.

1666673434267 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 109734912, while the sum is 61.

The spelling of 1666673434267 in words is "one trillion, six hundred sixty-six billion, six hundred seventy-three million, four hundred thirty-four thousand, two hundred sixty-seven".