164340434202149 has 2 divisors, whose sum is σ = 164340434202150. Its totient is φ = 164340434202148.

The previous prime is 164340434202121. The next prime is 164340434202181. The reversal of 164340434202149 is 941202434043461.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 154019269202500 + 10321164999649 = 12410450^2 + 3212657^2 .

It is a cyclic number.

It is not a de Polignac number, because 164340434202149 - 2²⁴ = 164340417424933 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (164340434202199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82170217101074 + 82170217101075.

It is an arithmetic number, because the mean of its divisors is an integer number (82170217101075).

Almost surely, 2^{164340434202149} is an apocalyptic number.

It is an amenable number.

164340434202149 is a deficient number, since it is larger than the sum of its proper divisors (1).

164340434202149 is an equidigital number, since it uses as much as digits as its factorization.

164340434202149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1990656, while the sum is 47.

The spelling of 164340434202149 in words is "one hundred sixty-four trillion, three hundred forty billion, four hundred thirty-four million, two hundred two thousand, one hundred forty-nine".