133368135541 has 2 divisors, whose sum is σ = 133368135542. Its totient is φ = 133368135540.

The previous prime is 133368135539. The next prime is 133368135661. The reversal of 133368135541 is 145531863331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 130772640625 + 2595494916 = 361625^2 + 50946^2 .

It is a cyclic number.

It is not a de Polignac number, because 133368135541 - 2¹ = 133368135539 is a prime.

Together with 133368135539, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133368130541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66684067770 + 66684067771.

It is an arithmetic number, because the mean of its divisors is an integer number (66684067771).

Almost surely, 2^133368135541 is an apocalyptic number.

It is an amenable number.

133368135541 is a deficient number, since it is larger than the sum of its proper divisors (1).

133368135541 is an equidigital number, since it uses as much as digits as its factorization.

133368135541 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 388800, while the sum is 43.

Adding to 133368135541 its reverse (145531863331), we get a palindrome (278899998872).

The spelling of 133368135541 in words is "one hundred thirty-three billion, three hundred sixty-eight million, one hundred thirty-five thousand, five hundred forty-one".