667340740133 has 2 divisors, whose sum is σ = 667340740134. Its totient is φ = 667340740132.

The previous prime is 667340739983. The next prime is 667340740159. The reversal of 667340740133 is 331047043766.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 667216149889 + 124590244 = 816833^2 + 11162^2 .

It is a cyclic number.

It is not a de Polignac number, because 667340740133 - 2¹⁸ = 667340477989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (667340740733) 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, 333670370066 + 333670370067.

It is an arithmetic number, because the mean of its divisors is an integer number (333670370067).

Almost surely, 2^667340740133 is an apocalyptic number.

It is an amenable number.

667340740133 is a deficient number, since it is larger than the sum of its proper divisors (1).

667340740133 is an equidigital number, since it uses as much as digits as its factorization.

667340740133 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 762048, while the sum is 44.

Adding to 667340740133 its reverse (331047043766), we get a palindrome (998387783899).

The spelling of 667340740133 in words is "six hundred sixty-seven billion, three hundred forty million, seven hundred forty thousand, one hundred thirty-three".