165843842877215 has 8 divisors (see below), whose sum is σ = 199237993803888. Its totient is φ = 132524819400960.

The previous prime is 165843842877143. The next prime is 165843842877217. The reversal of 165843842877215 is 512778248348561.

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

It is not a de Polignac number, because 165843842877215 - 2¹⁸ = 165843842615071 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165843842877217) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18781857746 + ... + 18781866575.

It is an arithmetic number, because the mean of its divisors is an integer number (24904749225486).

Almost surely, 2^{165843842877215} is an apocalyptic number.

165843842877215 is a deficient number, since it is larger than the sum of its proper divisors (33394150926673).

165843842877215 is an equidigital number, since it uses as much as digits as its factorization.

165843842877215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37563725209.

The product of its digits is 722534400, while the sum is 71.

The spelling of 165843842877215 in words is "one hundred sixty-five trillion, eight hundred forty-three billion, eight hundred forty-two million, eight hundred seventy-seven thousand, two hundred fifteen".