28366420207 has 2 divisors, whose sum is σ = 28366420208. Its totient is φ = 28366420206.

The previous prime is 28366420189. The next prime is 28366420219. The reversal of 28366420207 is 70202466382.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28366420207 - 2¹¹ = 28366418159 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28366420207.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28366420307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14183210103 + 14183210104.

It is an arithmetic number, because the mean of its divisors is an integer number (14183210104).

Almost surely, 2^28366420207 is an apocalyptic number.

28366420207 is a deficient number, since it is larger than the sum of its proper divisors (1).

28366420207 is an equidigital number, since it uses as much as digits as its factorization.

28366420207 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 193536, while the sum is 40.

Adding to 28366420207 its reverse (70202466382), we get a palindrome (98568886589).

The spelling of 28366420207 in words is "twenty-eight billion, three hundred sixty-six million, four hundred twenty thousand, two hundred seven".