28660259227 has 2 divisors, whose sum is σ = 28660259228. Its totient is φ = 28660259226.

The previous prime is 28660259219. The next prime is 28660259249. The reversal of 28660259227 is 72295206682.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28660259227 - 2³ = 28660259219 is a prime.

It is a super-3 number, since 3×28660259227³ (a number of 32 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (28660259207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14330129613 + 14330129614.

It is an arithmetic number, because the mean of its divisors is an integer number (14330129614).

Almost surely, 2^28660259227 is an apocalyptic number.

28660259227 is a deficient number, since it is larger than the sum of its proper divisors (1).

28660259227 is an equidigital number, since it uses as much as digits as its factorization.

28660259227 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1451520, while the sum is 49.

The spelling of 28660259227 in words is "twenty-eight billion, six hundred sixty million, two hundred fifty-nine thousand, two hundred twenty-seven".