165818976353 has 16 divisors (see below), whose sum is σ = 173500444800. Its totient is φ = 158177209344.

The previous prime is 165818976331. The next prime is 165818976487. The reversal of 165818976353 is 353679818561.

It is a cyclic number.

It is not a de Polignac number, because 165818976353 - 2⁶ = 165818976289 is a prime.

It is not an unprimeable number, because it can be changed into a prime (165818976053) 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 15 ways as a sum of consecutive naturals, for example, 40510775 + ... + 40514867.

It is an arithmetic number, because the mean of its divisors is an integer number (10843777800).

Almost surely, 2^165818976353 is an apocalyptic number.

It is an amenable number.

165818976353 is a deficient number, since it is larger than the sum of its proper divisors (7681468447).

165818976353 is a wasteful number, since it uses less digits than its factorization.

165818976353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8488.

The product of its digits is 32659200, while the sum is 62.

The spelling of 165818976353 in words is "one hundred sixty-five billion, eight hundred eighteen million, nine hundred seventy-six thousand, three hundred fifty-three".