165797047829 has 12 divisors (see below), whose sum is σ = 194775523308. Its totient is φ = 140704704000.

The previous prime is 165797047811. The next prime is 165797047879. The reversal of 165797047829 is 928740797561.

It can be written as a sum of positive squares in 2 ways, for example, as 147611176804 + 18185871025 = 384202^2 + 134855^2 .

It is not a de Polignac number, because 165797047829 - 2⁸ = 165797047573 is a prime.

It is a super-2 number, since 2×165797047829² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165797047879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16745612 + ... + 16755509.

It is an arithmetic number, because the mean of its divisors is an integer number (16231293609).

Almost surely, 2^165797047829 is an apocalyptic number.

It is an amenable number.

165797047829 is a deficient number, since it is larger than the sum of its proper divisors (28978475479).

165797047829 is a wasteful number, since it uses less digits than its factorization.

165797047829 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33501236 (or 33501229 counting only the distinct ones).

The product of its (nonzero) digits is 53343360, while the sum is 65.

The spelling of 165797047829 in words is "one hundred sixty-five billion, seven hundred ninety-seven million, forty-seven thousand, eight hundred twenty-nine".