165671304959 has 8 divisors (see below), whose sum is σ = 167498463552. Its totient is φ = 163850480640.

The previous prime is 165671304923. The next prime is 165671304989. The reversal of 165671304959 is 959403176561.

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 165671304959 - 2⁸ = 165671304703 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 (165671304989) 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, 1530962 + ... + 1635599.

It is an arithmetic number, because the mean of its divisors is an integer number (20937307944).

Almost surely, 2^165671304959 is an apocalyptic number.

165671304959 is a deficient number, since it is larger than the sum of its proper divisors (1827158593).

165671304959 is a wasteful number, since it uses less digits than its factorization.

165671304959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3167137.

The product of its (nonzero) digits is 6123600, while the sum is 56.

The spelling of 165671304959 in words is "one hundred sixty-five billion, six hundred seventy-one million, three hundred four thousand, nine hundred fifty-nine".