166834229729 has 2 divisors, whose sum is σ = 166834229730. Its totient is φ = 166834229728.

The previous prime is 166834229699. The next prime is 166834229743. The reversal of 166834229729 is 927922438661.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 118676805025 + 48157424704 = 344495^2 + 219448^2 .

It is a cyclic number.

It is not a de Polignac number, because 166834229729 - 2²⁰ = 166833181153 is a prime.

It is not a weakly prime, because it can be changed into another prime (166834229759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83417114864 + 83417114865.

It is an arithmetic number, because the mean of its divisors is an integer number (83417114865).

Almost surely, 2^166834229729 is an apocalyptic number.

It is an amenable number.

166834229729 is a deficient number, since it is larger than the sum of its proper divisors (1).

166834229729 is an equidigital number, since it uses as much as digits as its factorization.

166834229729 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15676416, while the sum is 59.

The spelling of 166834229729 in words is "one hundred sixty-six billion, eight hundred thirty-four million, two hundred twenty-nine thousand, seven hundred twenty-nine".