28359922769 has 2 divisors, whose sum is σ = 28359922770. Its totient is φ = 28359922768.

The previous prime is 28359922757. The next prime is 28359922771. The reversal of 28359922769 is 96722995382.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21050527744 + 7309395025 = 145088^2 + 85495^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28359922769 is a prime.

It is a super-2 number, since 2×28359922769² (a number of 22 digits) contains 22 as substring.

Together with 28359922771, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (28359952769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14179961384 + 14179961385.

It is an arithmetic number, because the mean of its divisors is an integer number (14179961385).

Almost surely, 2^28359922769 is an apocalyptic number.

It is an amenable number.

28359922769 is a deficient number, since it is larger than the sum of its proper divisors (1).

28359922769 is an equidigital number, since it uses as much as digits as its factorization.

28359922769 is an evil number, because the sum of its binary digits is even.

The product of its digits is 29393280, while the sum is 62.

The spelling of 28359922769 in words is "twenty-eight billion, three hundred fifty-nine million, nine hundred twenty-two thousand, seven hundred sixty-nine".