20000133269 has 2 divisors, whose sum is σ = 20000133270. Its totient is φ = 20000133268.

The previous prime is 20000133247. The next prime is 20000133271. The reversal of 20000133269 is 96233100002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19764142225 + 235991044 = 140585^2 + 15362^2 .

It is a cyclic number.

It is not a de Polignac number, because 20000133269 - 2¹⁶ = 20000067733 is a prime.

It is a super-2 number, since 2×20000133269² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

Together with 20000133271, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20000133869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10000066634 + 10000066635.

It is an arithmetic number, because the mean of its divisors is an integer number (10000066635).

Almost surely, 2^20000133269 is an apocalyptic number.

It is an amenable number.

20000133269 is a deficient number, since it is larger than the sum of its proper divisors (1).

20000133269 is an equidigital number, since it uses as much as digits as its factorization.

20000133269 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 26.

The spelling of 20000133269 in words is "twenty billion, one hundred thirty-three thousand, two hundred sixty-nine".