65167066121 has 2 divisors, whose sum is σ = 65167066122. Its totient is φ = 65167066120.

The previous prime is 65167066103. The next prime is 65167066141. The reversal of 65167066121 is 12166076156.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64538862025 + 628204096 = 254045^2 + 25064^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65167066121 is a prime.

It is not a weakly prime, because it can be changed into another prime (65167066141) 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, 32583533060 + 32583533061.

It is an arithmetic number, because the mean of its divisors is an integer number (32583533061).

Almost surely, 2^65167066121 is an apocalyptic number.

It is an amenable number.

65167066121 is a deficient number, since it is larger than the sum of its proper divisors (1).

65167066121 is an equidigital number, since it uses as much as digits as its factorization.

65167066121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90720, while the sum is 41.

The spelling of 65167066121 in words is "sixty-five billion, one hundred sixty-seven million, sixty-six thousand, one hundred twenty-one".