159794350078441 has 81 divisors (see below), whose sum is σ = 187957293952719. Its totient is φ = 135760473858048.

The previous prime is 159794350078427. The next prime is 159794350078471. The reversal of 159794350078441 is 144870053497951.

The square root of 159794350078441 is 12640979.

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

It can be written as a sum of positive squares in 13 ways, for example, as 119970728203225 + 39823621875216 = 10953115^2 + 6310596^2 .

It is not a de Polignac number, because 159794350078441 - 2⁵ = 159794350078409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (159794350078471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 131301848265 + ... + 131301849481.

Almost surely, 2^{159794350078441} is an apocalyptic number.

159794350078441 is the 12640979-th square number.

159794350078441 is the 6320490-th centered octagonal number.

It is an amenable number.

159794350078441 is a deficient number, since it is larger than the sum of its proper divisors (28162943874278).

159794350078441 is an frugal number, since it uses more digits than its factorization.

159794350078441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2588 (or 1294 counting only the distinct ones).

The product of its (nonzero) digits is 152409600, while the sum is 67.

The spelling of 159794350078441 in words is "one hundred fifty-nine trillion, seven hundred ninety-four billion, three hundred fifty million, seventy-eight thousand, four hundred forty-one".