165784860601 has 12 divisors (see below), whose sum is σ = 174987966000. Its totient is φ = 157042871928.

The previous prime is 165784860589. The next prime is 165784860607. The reversal of 165784860601 is 106068487561.

It is not a de Polignac number, because 165784860601 - 2⁹ = 165784860089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (165784860607) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4711210 + ... + 4746268.

It is an arithmetic number, because the mean of its divisors is an integer number (14582330500).

Almost surely, 2^165784860601 is an apocalyptic number.

It is an amenable number.

165784860601 is a deficient number, since it is larger than the sum of its proper divisors (9203105399).

165784860601 is a wasteful number, since it uses less digits than its factorization.

165784860601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48196 (or 48177 counting only the distinct ones).

The product of its (nonzero) digits is 1935360, while the sum is 52.

The spelling of 165784860601 in words is "one hundred sixty-five billion, seven hundred eighty-four million, eight hundred sixty thousand, six hundred one".