666235115123141 has 2 divisors, whose sum is σ = 666235115123142. Its totient is φ = 666235115123140.

The previous prime is 666235115123063. The next prime is 666235115123173. The reversal of 666235115123141 is 141321511532666.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 650993282284900 + 15241832838241 = 25514570^2 + 3904079^2 .

It is a cyclic number.

It is not a de Polignac number, because 666235115123141 - 2³⁰ = 666234041381317 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (666235115123191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333117557561570 + 333117557561571.

It is an arithmetic number, because the mean of its divisors is an integer number (333117557561571).

Almost surely, 2^{666235115123141} is an apocalyptic number.

It is an amenable number.

666235115123141 is a deficient number, since it is larger than the sum of its proper divisors (1).

666235115123141 is an equidigital number, since it uses as much as digits as its factorization.

666235115123141 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 777600, while the sum is 47.

The spelling of 666235115123141 in words is "six hundred sixty-six trillion, two hundred thirty-five billion, one hundred fifteen million, one hundred twenty-three thousand, one hundred forty-one".