133004421323561 has 2 divisors, whose sum is σ = 133004421323562. Its totient is φ = 133004421323560.

The previous prime is 133004421323497. The next prime is 133004421323603. The reversal of 133004421323561 is 165323124400331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 126518516322025 + 6485905001536 = 11248045^2 + 2546744^2 .

It is a cyclic number.

It is not a de Polignac number, because 133004421323561 - 2⁶ = 133004421323497 is a prime.

It is not a weakly prime, because it can be changed into another prime (133004421322561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66502210661780 + 66502210661781.

It is an arithmetic number, because the mean of its divisors is an integer number (66502210661781).

Almost surely, 2^{133004421323561} is an apocalyptic number.

It is an amenable number.

133004421323561 is a deficient number, since it is larger than the sum of its proper divisors (1).

133004421323561 is an equidigital number, since it uses as much as digits as its factorization.

133004421323561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 155520, while the sum is 38.

Adding to 133004421323561 its reverse (165323124400331), we get a palindrome (298327545723892).

The spelling of 133004421323561 in words is "one hundred thirty-three trillion, four billion, four hundred twenty-one million, three hundred twenty-three thousand, five hundred sixty-one".