159438579409 has 2 divisors, whose sum is σ = 159438579410. Its totient is φ = 159438579408.

The previous prime is 159438579407. The next prime is 159438579437. The reversal of 159438579409 is 904975834951.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 123813904384 + 35624675025 = 351872^2 + 188745^2 .

It is a cyclic number.

It is not a de Polignac number, because 159438579409 - 2¹ = 159438579407 is a prime.

Together with 159438579407, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (159438579407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79719289704 + 79719289705.

It is an arithmetic number, because the mean of its divisors is an integer number (79719289705).

Almost surely, 2^159438579409 is an apocalyptic number.

It is an amenable number.

159438579409 is a deficient number, since it is larger than the sum of its proper divisors (1).

159438579409 is an equidigital number, since it uses as much as digits as its factorization.

159438579409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48988800, while the sum is 64.

The spelling of 159438579409 in words is "one hundred fifty-nine billion, four hundred thirty-eight million, five hundred seventy-nine thousand, four hundred nine".