133720648097 has 2 divisors, whose sum is σ = 133720648098. Its totient is φ = 133720648096.

The previous prime is 133720648067. The next prime is 133720648121. The reversal of 133720648097 is 790846027331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 72640491361 + 61080156736 = 269519^2 + 247144^2 .

It is an emirp because it is prime and its reverse (790846027331) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 133720648097 - 2¹⁶ = 133720582561 is a prime.

It is not a weakly prime, because it can be changed into another prime (133720648067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66860324048 + 66860324049.

It is an arithmetic number, because the mean of its divisors is an integer number (66860324049).

Almost surely, 2^133720648097 is an apocalyptic number.

It is an amenable number.

133720648097 is a deficient number, since it is larger than the sum of its proper divisors (1).

133720648097 is an equidigital number, since it uses as much as digits as its factorization.

133720648097 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1524096, while the sum is 50.

The spelling of 133720648097 in words is "one hundred thirty-three billion, seven hundred twenty million, six hundred forty-eight thousand, ninety-seven".