28433164769 has 2 divisors, whose sum is σ = 28433164770. Its totient is φ = 28433164768.

The previous prime is 28433164733. The next prime is 28433164787. The reversal of 28433164769 is 96746133482.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28338355600 + 94809169 = 168340^2 + 9737^2 .

It is a cyclic number.

It is not a de Polignac number, because 28433164769 - 2¹² = 28433160673 is a prime.

It is a super-2 number, since 2×28433164769² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 28433164769.

It is not a weakly prime, because it can be changed into another prime (28433164789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14216582384 + 14216582385.

It is an arithmetic number, because the mean of its divisors is an integer number (14216582385).

Almost surely, 2^28433164769 is an apocalyptic number.

It is an amenable number.

28433164769 is a deficient number, since it is larger than the sum of its proper divisors (1).

28433164769 is an equidigital number, since it uses as much as digits as its factorization.

28433164769 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5225472, while the sum is 53.

The spelling of 28433164769 in words is "twenty-eight billion, four hundred thirty-three million, one hundred sixty-four thousand, seven hundred sixty-nine".