6668315495533 has 2 divisors, whose sum is σ = 6668315495534. Its totient is φ = 6668315495532.

The previous prime is 6668315495411. The next prime is 6668315495627. The reversal of 6668315495533 is 3355945138666.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5637385965124 + 1030929530409 = 2374318^2 + 1015347^2 .

It is a cyclic number.

It is not a de Polignac number, because 6668315495533 - 2²¹ = 6668313398381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6668315492533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3334157747766 + 3334157747767.

It is an arithmetic number, because the mean of its divisors is an integer number (3334157747767).

Almost surely, 2^{6668315495533} is an apocalyptic number.

It is an amenable number.

6668315495533 is a deficient number, since it is larger than the sum of its proper divisors (1).

6668315495533 is an equidigital number, since it uses as much as digits as its factorization.

6668315495533 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 209952000, while the sum is 64.

The spelling of 6668315495533 in words is "six trillion, six hundred sixty-eight billion, three hundred fifteen million, four hundred ninety-five thousand, five hundred thirty-three".