165541224361 has 8 divisors (see below), whose sum is σ = 175852582400. Its totient is φ = 155389732560.

The previous prime is 165541224353. The next prime is 165541224379. The reversal of 165541224361 is 163422145561.

165541224361 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 165541224361 - 2³ = 165541224353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (165541224391) 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 7 ways as a sum of consecutive naturals, for example, 39964425 + ... + 39968566.

It is an arithmetic number, because the mean of its divisors is an integer number (21981572800).

Almost surely, 2^165541224361 is an apocalyptic number.

It is an amenable number.

165541224361 is a deficient number, since it is larger than the sum of its proper divisors (10311358039).

165541224361 is a wasteful number, since it uses less digits than its factorization.

165541224361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79933119.

The product of its digits is 172800, while the sum is 40.

The spelling of 165541224361 in words is "one hundred sixty-five billion, five hundred forty-one million, two hundred twenty-four thousand, three hundred sixty-one".