165050101665 has 24 divisors (see below), whose sum is σ = 286122875688. Its totient is φ = 88015633920.

The previous prime is 165050101661. The next prime is 165050101669. The reversal of 165050101665 is 566101050561.

165050101665 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (165050101661) and next prime (165050101669).

It can be written as a sum of positive squares in 4 ways, for example, as 10499691024 + 154550410641 = 102468^2 + 393129^2 .

It is not a de Polignac number, because 165050101665 - 2² = 165050101661 is a prime.

It is not an unprimeable number, because it can be changed into a prime (165050101661) 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 23 ways as a sum of consecutive naturals, for example, 136707 + ... + 590583.

It is an arithmetic number, because the mean of its divisors is an integer number (11921786487).

Almost surely, 2^165050101665 is an apocalyptic number.

165050101665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

165050101665 is a deficient number, since it is larger than the sum of its proper divisors (121072774023).

165050101665 is a wasteful number, since it uses less digits than its factorization.

165050101665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 461969 (or 461966 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 36.

The spelling of 165050101665 in words is "one hundred sixty-five billion, fifty million, one hundred one thousand, six hundred sixty-five".