666017441573053 has 2 divisors, whose sum is σ = 666017441573054. Its totient is φ = 666017441573052.

The previous prime is 666017441573041. The next prime is 666017441573087. The reversal of 666017441573053 is 350375144710666.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 449947374313369 + 216070067259684 = 21211963^2 + 14699322^2 .

It is a cyclic number.

It is not a de Polignac number, because 666017441573053 - 2¹³ = 666017441564861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (666017441553053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333008720786526 + 333008720786527.

It is an arithmetic number, because the mean of its divisors is an integer number (333008720786527).

Almost surely, 2^{666017441573053} is an apocalyptic number.

It is an amenable number.

666017441573053 is a deficient number, since it is larger than the sum of its proper divisors (1).

666017441573053 is an equidigital number, since it uses as much as digits as its factorization.

666017441573053 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 38102400, while the sum is 58.

The spelling of 666017441573053 in words is "six hundred sixty-six trillion, seventeen billion, four hundred forty-one million, five hundred seventy-three thousand, fifty-three".