28789266269 has 2 divisors, whose sum is σ = 28789266270. Its totient is φ = 28789266268.

The previous prime is 28789266263. The next prime is 28789266277. The reversal of 28789266269 is 96266298782.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28442822500 + 346443769 = 168650^2 + 18613^2 .

It is a cyclic number.

It is not a de Polignac number, because 28789266269 - 2¹⁶ = 28789200733 is a prime.

It is a super-2 number, since 2×28789266269² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28789266263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14394633134 + 14394633135.

It is an arithmetic number, because the mean of its divisors is an integer number (14394633135).

Almost surely, 2^28789266269 is an apocalyptic number.

It is an amenable number.

28789266269 is a deficient number, since it is larger than the sum of its proper divisors (1).

28789266269 is an equidigital number, since it uses as much as digits as its factorization.

28789266269 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 62705664, while the sum is 65.

The spelling of 28789266269 in words is "twenty-eight billion, seven hundred eighty-nine million, two hundred sixty-six thousand, two hundred sixty-nine".