165975996029 has 2 divisors, whose sum is σ = 165975996030. Its totient is φ = 165975996028.

The previous prime is 165975996007. The next prime is 165975996097. The reversal of 165975996029 is 920699579561.

It is an a-pointer prime, because the next prime (165975996097) can be obtained adding 165975996029 to its sum of digits (68).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 146862933529 + 19113062500 = 383227^2 + 138250^2 .

It is an emirp because it is prime and its reverse (920699579561) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 165975996029 - 2³⁶ = 97256519293 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 165975996029.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (165975998029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82987998014 + 82987998015.

It is an arithmetic number, because the mean of its divisors is an integer number (82987998015).

Almost surely, 2^165975996029 is an apocalyptic number.

It is an amenable number.

165975996029 is a deficient number, since it is larger than the sum of its proper divisors (1).

165975996029 is an equidigital number, since it uses as much as digits as its factorization.

165975996029 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 82668600, while the sum is 68.

The spelling of 165975996029 in words is "one hundred sixty-five billion, nine hundred seventy-five million, nine hundred ninety-six thousand, twenty-nine".