28660183309 has 2 divisors, whose sum is σ = 28660183310. Its totient is φ = 28660183308.

The previous prime is 28660183289. The next prime is 28660183327. The reversal of 28660183309 is 90338106682.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21969761284 + 6690422025 = 148222^2 + 81795^2 .

It is a cyclic number.

It is not a de Polignac number, because 28660183309 - 2²⁷ = 28525965581 is a prime.

It is a super-2 number, since 2×28660183309² (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 (28660183339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14330091654 + 14330091655.

It is an arithmetic number, because the mean of its divisors is an integer number (14330091655).

Almost surely, 2^28660183309 is an apocalyptic number.

It is an amenable number.

28660183309 is a deficient number, since it is larger than the sum of its proper divisors (1).

28660183309 is an equidigital number, since it uses as much as digits as its factorization.

28660183309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 373248, while the sum is 46.

The spelling of 28660183309 in words is "twenty-eight billion, six hundred sixty million, one hundred eighty-three thousand, three hundred nine".