28430650069 has 2 divisors, whose sum is σ = 28430650070. Its totient is φ = 28430650068.

The previous prime is 28430650067. The next prime is 28430650147. The reversal of 28430650069 is 96005603482.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22507500625 + 5923149444 = 150025^2 + 76962^2 .

It is a cyclic number.

It is not a de Polignac number, because 28430650069 - 2¹ = 28430650067 is a prime.

It is a super-2 number, since 2×28430650069² (a number of 22 digits) contains 22 as substring.

Together with 28430650067, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28430650067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14215325034 + 14215325035.

It is an arithmetic number, because the mean of its divisors is an integer number (14215325035).

Almost surely, 2^28430650069 is an apocalyptic number.

It is an amenable number.

28430650069 is a deficient number, since it is larger than the sum of its proper divisors (1).

28430650069 is an equidigital number, since it uses as much as digits as its factorization.

28430650069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 311040, while the sum is 43.

The spelling of 28430650069 in words is "twenty-eight billion, four hundred thirty million, six hundred fifty thousand, sixty-nine".