159259781243 has 2 divisors, whose sum is σ = 159259781244. Its totient is φ = 159259781242.

The previous prime is 159259781209. The next prime is 159259781267. The reversal of 159259781243 is 342187952951.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 159259781243 - 2¹⁰ = 159259780219 is a prime.

It is not a weakly prime, because it can be changed into another prime (159259781543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79629890621 + 79629890622.

It is an arithmetic number, because the mean of its divisors is an integer number (79629890622).

Almost surely, 2^159259781243 is an apocalyptic number.

159259781243 is a deficient number, since it is larger than the sum of its proper divisors (1).

159259781243 is an equidigital number, since it uses as much as digits as its factorization.

159259781243 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5443200, while the sum is 56.

The spelling of 159259781243 in words is "one hundred fifty-nine billion, two hundred fifty-nine million, seven hundred eighty-one thousand, two hundred forty-three".