164343580091 has 2 divisors, whose sum is σ = 164343580092. Its totient is φ = 164343580090.

The previous prime is 164343580069. The next prime is 164343580153. The reversal of 164343580091 is 190085343461.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 164343580091 - 2¹⁰ = 164343579067 is a prime.

It is not a weakly prime, because it can be changed into another prime (164343580391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82171790045 + 82171790046.

It is an arithmetic number, because the mean of its divisors is an integer number (82171790046).

Almost surely, 2^164343580091 is an apocalyptic number.

164343580091 is a deficient number, since it is larger than the sum of its proper divisors (1).

164343580091 is an equidigital number, since it uses as much as digits as its factorization.

164343580091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 311040, while the sum is 44.

The spelling of 164343580091 in words is "one hundred sixty-four billion, three hundred forty-three million, five hundred eighty thousand, ninety-one".