168041634631529 has 2 divisors, whose sum is σ = 168041634631530. Its totient is φ = 168041634631528.

The previous prime is 168041634631477. The next prime is 168041634631531. The reversal of 168041634631529 is 925136436140861.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 165588589543129 + 2453045088400 = 12868123^2 + 1566220^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-168041634631529 is a prime.

Together with 168041634631531, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (168041634636529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84020817315764 + 84020817315765.

It is an arithmetic number, because the mean of its divisors is an integer number (84020817315765).

Almost surely, 2^{168041634631529} is an apocalyptic number.

It is an amenable number.

168041634631529 is a deficient number, since it is larger than the sum of its proper divisors (1).

168041634631529 is an equidigital number, since it uses as much as digits as its factorization.

168041634631529 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 22394880, while the sum is 59.

The spelling of 168041634631529 in words is "one hundred sixty-eight trillion, forty-one billion, six hundred thirty-four million, six hundred thirty-one thousand, five hundred twenty-nine".