165313143641 has 4 divisors (see below), whose sum is σ = 171013596900. Its totient is φ = 159612690384.

The previous prime is 165313143629. The next prime is 165313143647. The reversal of 165313143641 is 146341313561.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 128332315225 + 36980828416 = 358235^2 + 192304^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-165313143641 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 165313143595 and 165313143604.

It is not an unprimeable number, because it can be changed into a prime (165313143647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2850226586 + ... + 2850226643.

It is an arithmetic number, because the mean of its divisors is an integer number (42753399225).

Almost surely, 2^165313143641 is an apocalyptic number.

It is an amenable number.

165313143641 is a deficient number, since it is larger than the sum of its proper divisors (5700453259).

165313143641 is an equidigital number, since it uses as much as digits as its factorization.

165313143641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5700453258.

The product of its digits is 77760, while the sum is 38.

The spelling of 165313143641 in words is "one hundred sixty-five billion, three hundred thirteen million, one hundred forty-three thousand, six hundred forty-one".