165404232641 has 8 divisors (see below), whose sum is σ = 171823766400. Its totient is φ = 159032428240.

The previous prime is 165404232607. The next prime is 165404232647. The reversal of 165404232641 is 146232404561.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 165404232641 - 2¹⁰ = 165404231617 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 165404232595 and 165404232604.

It is not an unprimeable number, because it can be changed into a prime (165404232647) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 11925275 + ... + 11939136.

It is an arithmetic number, because the mean of its divisors is an integer number (21477970800).

Almost surely, 2^165404232641 is an apocalyptic number.

It is an amenable number.

165404232641 is a deficient number, since it is larger than the sum of its proper divisors (6419533759).

165404232641 is a wasteful number, since it uses less digits than its factorization.

165404232641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23864679.

The product of its (nonzero) digits is 138240, while the sum is 38.

The spelling of 165404232641 in words is "one hundred sixty-five billion, four hundred four million, two hundred thirty-two thousand, six hundred forty-one".