159121409641 has 2 divisors, whose sum is σ = 159121409642. Its totient is φ = 159121409640.

The previous prime is 159121409617. The next prime is 159121409651. The reversal of 159121409641 is 146904121951.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 158407184016 + 714225625 = 398004^2 + 26725^2 .

It is a cyclic number.

It is not a de Polignac number, because 159121409641 - 2²⁹ = 158584538729 is a prime.

It is a super-2 number, since 2×159121409641² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (159121409651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79560704820 + 79560704821.

It is an arithmetic number, because the mean of its divisors is an integer number (79560704821).

Almost surely, 2^159121409641 is an apocalyptic number.

It is an amenable number.

159121409641 is a deficient number, since it is larger than the sum of its proper divisors (1).

159121409641 is an equidigital number, since it uses as much as digits as its factorization.

159121409641 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 77760, while the sum is 43.

The spelling of 159121409641 in words is "one hundred fifty-nine billion, one hundred twenty-one million, four hundred nine thousand, six hundred forty-one".