164323665697 has 2 divisors, whose sum is σ = 164323665698. Its totient is φ = 164323665696.

The previous prime is 164323665691. The next prime is 164323665703. The reversal of 164323665697 is 796566323461.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (164323665691) and next prime (164323665703).

It can be written as a sum of positive squares in only one way, i.e., 131301870736 + 33021794961 = 362356^2 + 181719^2 .

It is a cyclic number.

It is not a de Polignac number, because 164323665697 - 2³ = 164323665689 is a prime.

It is not a weakly prime, because it can be changed into another prime (164323665691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82161832848 + 82161832849.

It is an arithmetic number, because the mean of its divisors is an integer number (82161832849).

Almost surely, 2^164323665697 is an apocalyptic number.

It is an amenable number.

164323665697 is a deficient number, since it is larger than the sum of its proper divisors (1).

164323665697 is an equidigital number, since it uses as much as digits as its factorization.

164323665697 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 29393280, while the sum is 58.

The spelling of 164323665697 in words is "one hundred sixty-four billion, three hundred twenty-three million, six hundred sixty-five thousand, six hundred ninety-seven".