165043324521029 has 2 divisors, whose sum is σ = 165043324521030. Its totient is φ = 165043324521028.

The previous prime is 165043324521011. The next prime is 165043324521133. The reversal of 165043324521029 is 920125423340561.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 85259091952225 + 79784232568804 = 9233585^2 + 8932202^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-165043324521029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (165043324521629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82521662260514 + 82521662260515.

It is an arithmetic number, because the mean of its divisors is an integer number (82521662260515).

Almost surely, 2^{165043324521029} is an apocalyptic number.

It is an amenable number.

165043324521029 is a deficient number, since it is larger than the sum of its proper divisors (1).

165043324521029 is an equidigital number, since it uses as much as digits as its factorization.

165043324521029 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1555200, while the sum is 47.

The spelling of 165043324521029 in words is "one hundred sixty-five trillion, forty-three billion, three hundred twenty-four million, five hundred twenty-one thousand, twenty-nine".