133666758829 has 2 divisors, whose sum is σ = 133666758830. Its totient is φ = 133666758828.

The previous prime is 133666758793. The next prime is 133666758833. The reversal of 133666758829 is 928857666331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 131950562500 + 1716196329 = 363250^2 + 41427^2 .

It is a cyclic number.

It is not a de Polignac number, because 133666758829 - 2¹¹ = 133666756781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133666758859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66833379414 + 66833379415.

It is an arithmetic number, because the mean of its divisors is an integer number (66833379415).

Almost surely, 2^133666758829 is an apocalyptic number.

It is an amenable number.

133666758829 is a deficient number, since it is larger than the sum of its proper divisors (1).

133666758829 is an equidigital number, since it uses as much as digits as its factorization.

133666758829 is an evil number, because the sum of its binary digits is even.

The product of its digits is 78382080, while the sum is 64.

The spelling of 133666758829 in words is "one hundred thirty-three billion, six hundred sixty-six million, seven hundred fifty-eight thousand, eight hundred twenty-nine".