28680604243 has 2 divisors, whose sum is σ = 28680604244. Its totient is φ = 28680604242.

The previous prime is 28680604223. The next prime is 28680604319. The reversal of 28680604243 is 34240608682.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28680604243 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28680604243.

It is not a weakly prime, because it can be changed into another prime (28680604223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14340302121 + 14340302122.

It is an arithmetic number, because the mean of its divisors is an integer number (14340302122).

Almost surely, 2^28680604243 is an apocalyptic number.

28680604243 is a deficient number, since it is larger than the sum of its proper divisors (1).

28680604243 is an equidigital number, since it uses as much as digits as its factorization.

28680604243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 442368, while the sum is 43.

The spelling of 28680604243 in words is "twenty-eight billion, six hundred eighty million, six hundred four thousand, two hundred forty-three".