66874168331353 has 2 divisors, whose sum is σ = 66874168331354. Its totient is φ = 66874168331352.

The previous prime is 66874168331329. The next prime is 66874168331417. The reversal of 66874168331353 is 35313386147866.

It is an a-pointer prime, because the next prime (66874168331417) can be obtained adding 66874168331353 to its sum of digits (64).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38800839657024 + 28073328674329 = 6229032^2 + 5298427^2 .

It is a cyclic number.

It is not a de Polignac number, because 66874168331353 - 2⁹ = 66874168330841 is a prime.

It is not a weakly prime, because it can be changed into another prime (66874168332353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33437084165676 + 33437084165677.

It is an arithmetic number, because the mean of its divisors is an integer number (33437084165677).

Almost surely, 2^{66874168331353} is an apocalyptic number.

It is an amenable number.

66874168331353 is a deficient number, since it is larger than the sum of its proper divisors (1).

66874168331353 is an equidigital number, since it uses as much as digits as its factorization.

66874168331353 is an evil number, because the sum of its binary digits is even.

The product of its digits is 156764160, while the sum is 64.

The spelling of 66874168331353 in words is "sixty-six trillion, eight hundred seventy-four billion, one hundred sixty-eight million, three hundred thirty-one thousand, three hundred fifty-three".