164343580069 has 2 divisors, whose sum is σ = 164343580070. Its totient is φ = 164343580068.

The previous prime is 164343580067. The next prime is 164343580091. The reversal of 164343580069 is 960085343461.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 161554155844 + 2789424225 = 401938^2 + 52815^2 .

It is a cyclic number.

It is not a de Polignac number, because 164343580069 - 2¹ = 164343580067 is a prime.

It is a super-2 number, since 2×164343580069² (a number of 23 digits) contains 22 as substring.

Together with 164343580067, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (164343580067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82171790034 + 82171790035.

It is an arithmetic number, because the mean of its divisors is an integer number (82171790035).

Almost surely, 2^164343580069 is an apocalyptic number.

It is an amenable number.

164343580069 is a deficient number, since it is larger than the sum of its proper divisors (1).

164343580069 is an equidigital number, since it uses as much as digits as its factorization.

164343580069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1866240, while the sum is 49.

The spelling of 164343580069 in words is "one hundred sixty-four billion, three hundred forty-three million, five hundred eighty thousand, sixty-nine".