28679878219 has 2 divisors, whose sum is σ = 28679878220. Its totient is φ = 28679878218.

The previous prime is 28679878217. The next prime is 28679878243. The reversal of 28679878219 is 91287897682.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28679878219 - 2¹ = 28679878217 is a prime.

It is a super-2 number, since 2×28679878219² (a number of 22 digits) contains 22 as substring.

Together with 28679878217, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (28679878217) 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, 14339939109 + 14339939110.

It is an arithmetic number, because the mean of its divisors is an integer number (14339939110).

Almost surely, 2^28679878219 is an apocalyptic number.

28679878219 is a deficient number, since it is larger than the sum of its proper divisors (1).

28679878219 is an equidigital number, since it uses as much as digits as its factorization.

28679878219 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48771072, while the sum is 67.

The spelling of 28679878219 in words is "twenty-eight billion, six hundred seventy-nine million, eight hundred seventy-eight thousand, two hundred nineteen".