28553885291 has 2 divisors, whose sum is σ = 28553885292. Its totient is φ = 28553885290.

The previous prime is 28553885209. The next prime is 28553885293. The reversal of 28553885291 is 19258835582.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28553885291 is a prime.

Together with 28553885293, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (28553885293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14276942645 + 14276942646.

It is an arithmetic number, because the mean of its divisors is an integer number (14276942646).

Almost surely, 2^28553885291 is an apocalyptic number.

28553885291 is a deficient number, since it is larger than the sum of its proper divisors (1).

28553885291 is an equidigital number, since it uses as much as digits as its factorization.

28553885291 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6912000, while the sum is 56.

The spelling of 28553885291 in words is "twenty-eight billion, five hundred fifty-three million, eight hundred eighty-five thousand, two hundred ninety-one".