20533233289 has 2 divisors, whose sum is σ = 20533233290. Its totient is φ = 20533233288.

The previous prime is 20533233271. The next prime is 20533233307. The reversal of 20533233289 is 98233233502.

It is a balanced prime because it is at equal distance from previous prime (20533233271) and next prime (20533233307).

It can be written as a sum of positive squares in only one way, i.e., 13151502400 + 7381730889 = 114680^2 + 85917^2 .

It is a cyclic number.

It is not a de Polignac number, because 20533233289 - 2⁹ = 20533232777 is a prime.

It is a super-2 number, since 2×20533233289² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20533233229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10266616644 + 10266616645.

It is an arithmetic number, because the mean of its divisors is an integer number (10266616645).

Almost surely, 2^20533233289 is an apocalyptic number.

It is an amenable number.

20533233289 is a deficient number, since it is larger than the sum of its proper divisors (1).

20533233289 is an equidigital number, since it uses as much as digits as its factorization.

20533233289 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 233280, while the sum is 40.

The spelling of 20533233289 in words is "twenty billion, five hundred thirty-three million, two hundred thirty-three thousand, two hundred eighty-nine".