133661476822417 has 2 divisors, whose sum is σ = 133661476822418. Its totient is φ = 133661476822416.

The previous prime is 133661476822399. The next prime is 133661476822421. The reversal of 133661476822417 is 714228674166331.

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., 125510771579281 + 8150705243136 = 11203159^2 + 2854944^2 .

It is a cyclic number.

It is not a de Polignac number, because 133661476822417 - 2¹⁵ = 133661476789649 is a prime.

It is not a weakly prime, because it can be changed into another prime (133661476822817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66830738411208 + 66830738411209.

It is an arithmetic number, because the mean of its divisors is an integer number (66830738411209).

Almost surely, 2^{133661476822417} is an apocalyptic number.

It is an amenable number.

133661476822417 is a deficient number, since it is larger than the sum of its proper divisors (1).

133661476822417 is an equidigital number, since it uses as much as digits as its factorization.

133661476822417 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48771072, while the sum is 61.

The spelling of 133661476822417 in words is "one hundred thirty-three trillion, six hundred sixty-one billion, four hundred seventy-six million, eight hundred twenty-two thousand, four hundred seventeen".