133405486817 has 2 divisors, whose sum is σ = 133405486818. Its totient is φ = 133405486816.

The previous prime is 133405486813. The next prime is 133405486853. The reversal of 133405486817 is 718684504331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 104452422481 + 28953064336 = 323191^2 + 170156^2 .

It is a cyclic number.

It is not a de Polignac number, because 133405486817 - 2² = 133405486813 is a prime.

It is not a weakly prime, because it can be changed into another prime (133405486813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66702743408 + 66702743409.

It is an arithmetic number, because the mean of its divisors is an integer number (66702743409).

Almost surely, 2^133405486817 is an apocalyptic number.

It is an amenable number.

133405486817 is a deficient number, since it is larger than the sum of its proper divisors (1).

133405486817 is an equidigital number, since it uses as much as digits as its factorization.

133405486817 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1935360, while the sum is 50.

The spelling of 133405486817 in words is "one hundred thirty-three billion, four hundred five million, four hundred eighty-six thousand, eight hundred seventeen".