165039760168 has 8 divisors (see below), whose sum is σ = 309449550330. Its totient is φ = 82519880080.

The previous prime is 165039760159. The next prime is 165039760241. The reversal of 165039760168 is 861067930561.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 119330175364 + 45709584804 = 345442^2 + 213798^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 10314985003 + ... + 10314985018.

Almost surely, 2^165039760168 is an apocalyptic number.

It is an amenable number.

165039760168 is a deficient number, since it is larger than the sum of its proper divisors (144409790162).

165039760168 is a wasteful number, since it uses less digits than its factorization.

165039760168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20629970027 (or 20629970023 counting only the distinct ones).

The product of its (nonzero) digits is 1632960, while the sum is 52.

The spelling of 165039760168 in words is "one hundred sixty-five billion, thirty-nine million, seven hundred sixty thousand, one hundred sixty-eight".