28810064447 has 2 divisors, whose sum is σ = 28810064448. Its totient is φ = 28810064446.

The previous prime is 28810064429. The next prime is 28810064449. The reversal of 28810064447 is 74446001882.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28810064447 - 2¹⁰ = 28810063423 is a prime.

Together with 28810064449, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 28810064398 and 28810064407.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28810064449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14405032223 + 14405032224.

It is an arithmetic number, because the mean of its divisors is an integer number (14405032224).

Almost surely, 2^28810064447 is an apocalyptic number.

28810064447 is a deficient number, since it is larger than the sum of its proper divisors (1).

28810064447 is an equidigital number, since it uses as much as digits as its factorization.

28810064447 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 344064, while the sum is 44.

The spelling of 28810064447 in words is "twenty-eight billion, eight hundred ten million, sixty-four thousand, four hundred forty-seven".