159509816671 has 4 divisors (see below), whose sum is σ = 167905070200. Its totient is φ = 151114563144.

The previous prime is 159509816621. The next prime is 159509816717. The reversal of 159509816671 is 176618905951.

159509816671 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 159509816671 - 2²³ = 159501428063 is a prime.

It is a super-2 number, since 2×159509816671² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (159509816621) 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 3 ways as a sum of consecutive naturals, for example, 4197626736 + ... + 4197626773.

It is an arithmetic number, because the mean of its divisors is an integer number (41976267550).

Almost surely, 2^159509816671 is an apocalyptic number.

159509816671 is a deficient number, since it is larger than the sum of its proper divisors (8395253529).

159509816671 is an equidigital number, since it uses as much as digits as its factorization.

159509816671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8395253528.

The product of its (nonzero) digits is 4082400, while the sum is 58.

The spelling of 159509816671 in words is "one hundred fifty-nine billion, five hundred nine million, eight hundred sixteen thousand, six hundred seventy-one".