20133240289 has 2 divisors, whose sum is σ = 20133240290. Its totient is φ = 20133240288.

The previous prime is 20133240229. The next prime is 20133240293. The reversal of 20133240289 is 98204233102.

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., 19037100625 + 1096139664 = 137975^2 + 33108^2 .

It is a cyclic number.

It is not a de Polignac number, because 20133240289 - 2¹¹ = 20133238241 is a prime.

It is a super-2 number, since 2×20133240289² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20133240229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10066620144 + 10066620145.

It is an arithmetic number, because the mean of its divisors is an integer number (10066620145).

Almost surely, 2^20133240289 is an apocalyptic number.

It is an amenable number.

20133240289 is a deficient number, since it is larger than the sum of its proper divisors (1).

20133240289 is an equidigital number, since it uses as much as digits as its factorization.

20133240289 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20736, while the sum is 34.

The spelling of 20133240289 in words is "twenty billion, one hundred thirty-three million, two hundred forty thousand, two hundred eighty-nine".