159882421609 has 3 divisors (see below), whose sum is σ = 159882821463. Its totient is φ = 159882021756.

The previous prime is 159882421577. The next prime is 159882421613. The reversal of 159882421609 is 906124288951.

The square root of 159882421609 is 399853.

It is a perfect power (a square), and thus also a powerful number.

159882421609 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, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 149308824025 + 10573597584 = 386405^2 + 102828^2 .

It is not a de Polignac number, because 159882421609 - 2⁵ = 159882421577 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 159882421609.

It is not an unprimeable number, because it can be changed into a prime (159882428609) 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 2 ways as a sum of consecutive naturals, for example, 199927 + ... + 599779.

It is an arithmetic number, because the mean of its divisors is an integer number (53294273821).

Almost surely, 2^159882421609 is an apocalyptic number.

159882421609 is the 399853-rd square number.

159882421609 is the 199927-th centered octagonal number.

It is an amenable number.

159882421609 is a deficient number, since it is larger than the sum of its proper divisors (399854).

159882421609 is an frugal number, since it uses more digits than its factorization.

159882421609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 799706 (or 399853 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 55.

The spelling of 159882421609 in words is "one hundred fifty-nine billion, eight hundred eighty-two million, four hundred twenty-one thousand, six hundred nine".