165055516609994 has 16 divisors (see below), whose sum is σ = 262157106995208. Its totient is φ = 77670188723712.

The previous prime is 165055516609993. The next prime is 165055516610029. The reversal of 165055516609994 is 499906615550561.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 164726828814025 + 328687795969 = 12834595^2 + 573313^2 .

It is not an unprimeable number, because it can be changed into a prime (165055516609993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92716667 + ... + 94480110.

Almost surely, 2^{165055516609994} is an apocalyptic number.

165055516609994 is a deficient number, since it is larger than the sum of its proper divisors (97101590385214).

165055516609994 is a wasteful number, since it uses less digits than its factorization.

165055516609994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187222729.

The product of its (nonzero) digits is 393660000, while the sum is 71.

The spelling of 165055516609994 in words is "one hundred sixty-five trillion, fifty-five billion, five hundred sixteen million, six hundred nine thousand, nine hundred ninety-four".