666334602462553 has 2 divisors, whose sum is σ = 666334602462554. Its totient is φ = 666334602462552.

The previous prime is 666334602462547. The next prime is 666334602462619. The reversal of 666334602462553 is 355264206433666.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 545018300023129 + 121316302439424 = 23345627^2 + 11014368^2 .

It is a cyclic number.

It is not a de Polignac number, because 666334602462553 - 2⁴⁹ = 103384649041241 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 666334602462491 and 666334602462500.

It is not a weakly prime, because it can be changed into another prime (666334602462523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333167301231276 + 333167301231277.

It is an arithmetic number, because the mean of its divisors is an integer number (333167301231277).

Almost surely, 2^{666334602462553} is an apocalyptic number.

It is an amenable number.

666334602462553 is a deficient number, since it is larger than the sum of its proper divisors (1).

666334602462553 is an equidigital number, since it uses as much as digits as its factorization.

666334602462553 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 335923200, while the sum is 61.

The spelling of 666334602462553 in words is "six hundred sixty-six trillion, three hundred thirty-four billion, six hundred two million, four hundred sixty-two thousand, five hundred fifty-three".