664524342133 has 2 divisors, whose sum is σ = 664524342134. Its totient is φ = 664524342132.

The previous prime is 664524342047. The next prime is 664524342187. The reversal of 664524342133 is 331243425466.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 491915668689 + 172608673444 = 701367^2 + 415462^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-664524342133 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 664524342133.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (664524342533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 332262171066 + 332262171067.

It is an arithmetic number, because the mean of its divisors is an integer number (332262171067).

Almost surely, 2^664524342133 is an apocalyptic number.

It is an amenable number.

664524342133 is a deficient number, since it is larger than the sum of its proper divisors (1).

664524342133 is an equidigital number, since it uses as much as digits as its factorization.

664524342133 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1244160, while the sum is 43.

Adding to 664524342133 its reverse (331243425466), we get a palindrome (995767767599).

The spelling of 664524342133 in words is "six hundred sixty-four billion, five hundred twenty-four million, three hundred forty-two thousand, one hundred thirty-three".