159605385281 has 2 divisors, whose sum is σ = 159605385282. Its totient is φ = 159605385280.

The previous prime is 159605385253. The next prime is 159605385299. The reversal of 159605385281 is 182583506951.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 111823360000 + 47782025281 = 334400^2 + 218591^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-159605385281 is a prime.

It is a super-3 number, since 3×159605385281³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (159605385881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79802692640 + 79802692641.

It is an arithmetic number, because the mean of its divisors is an integer number (79802692641).

Almost surely, 2^159605385281 is an apocalyptic number.

It is an amenable number.

159605385281 is a deficient number, since it is larger than the sum of its proper divisors (1).

159605385281 is an equidigital number, since it uses as much as digits as its factorization.

159605385281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592000, while the sum is 53.

The spelling of 159605385281 in words is "one hundred fifty-nine billion, six hundred five million, three hundred eighty-five thousand, two hundred eighty-one".