165151166615601 has 32 divisors (see below), whose sum is σ = 234265734804480. Its totient is φ = 103194004536000.

The previous prime is 165151166615597. The next prime is 165151166615663. The reversal of 165151166615601 is 106516661151561.

It is not a de Polignac number, because 165151166615601 - 2² = 165151166615597 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (165151166615671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3506695 + ... + 18509436.

It is an arithmetic number, because the mean of its divisors is an integer number (7320804212640).

Almost surely, 2^{165151166615601} is an apocalyptic number.

It is an amenable number.

165151166615601 is a deficient number, since it is larger than the sum of its proper divisors (69114568188879).

165151166615601 is a wasteful number, since it uses less digits than its factorization.

165151166615601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22017557.

The product of its (nonzero) digits is 972000, while the sum is 51.

The spelling of 165151166615601 in words is "one hundred sixty-five trillion, one hundred fifty-one billion, one hundred sixty-six million, six hundred fifteen thousand, six hundred one".