666733340753 has 2 divisors, whose sum is σ = 666733340754. Its totient is φ = 666733340752.

The previous prime is 666733340731. The next prime is 666733340761. The reversal of 666733340753 is 357043337666.

666733340753 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 657061011649 + 9672329104 = 810593^2 + 98348^2 .

It is a cyclic number.

It is not a de Polignac number, because 666733340753 - 2¹⁰ = 666733339729 is a prime.

It is a super-3 number, since 3×666733340753³ (a number of 36 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 666733340695 and 666733340704.

It is not a weakly prime, because it can be changed into another prime (666733240753) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333366670376 + 333366670377.

It is an arithmetic number, because the mean of its divisors is an integer number (333366670377).

Almost surely, 2^666733340753 is an apocalyptic number.

It is an amenable number.

666733340753 is a deficient number, since it is larger than the sum of its proper divisors (1).

666733340753 is an equidigital number, since it uses as much as digits as its factorization.

666733340753 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17146080, while the sum is 53.

The spelling of 666733340753 in words is "six hundred sixty-six billion, seven hundred thirty-three million, three hundred forty thousand, seven hundred fifty-three".