166684343351 has 2 divisors, whose sum is σ = 166684343352. Its totient is φ = 166684343350.

The previous prime is 166684343323. The next prime is 166684343369. The reversal of 166684343351 is 153343486661.

It is a strong prime.

It is an emirp because it is prime and its reverse (153343486661) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 166684343351 - 2²² = 166680149047 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 166684343351.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166684343321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83342171675 + 83342171676.

It is an arithmetic number, because the mean of its divisors is an integer number (83342171676).

Almost surely, 2^166684343351 is an apocalyptic number.

166684343351 is a deficient number, since it is larger than the sum of its proper divisors (1).

166684343351 is an equidigital number, since it uses as much as digits as its factorization.

166684343351 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3732480, while the sum is 50.

The spelling of 166684343351 in words is "one hundred sixty-six billion, six hundred eighty-four million, three hundred forty-three thousand, three hundred fifty-one".