28058550281 has 2 divisors, whose sum is σ = 28058550282. Its totient is φ = 28058550280.

The previous prime is 28058550271. The next prime is 28058550283. The reversal of 28058550281 is 18205585082.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24675383056 + 3383167225 = 157084^2 + 58165^2 .

It is a cyclic number.

It is not a de Polignac number, because 28058550281 - 2¹⁴ = 28058533897 is a prime.

It is a super-2 number, since 2×28058550281² (a number of 22 digits) contains 22 as substring.

Together with 28058550283, 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 (28058550283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14029275140 + 14029275141.

It is an arithmetic number, because the mean of its divisors is an integer number (14029275141).

Almost surely, 2^28058550281 is an apocalyptic number.

It is an amenable number.

28058550281 is a deficient number, since it is larger than the sum of its proper divisors (1).

28058550281 is an equidigital number, since it uses as much as digits as its factorization.

28058550281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 256000, while the sum is 44.

The spelling of 28058550281 in words is "twenty-eight billion, fifty-eight million, five hundred fifty thousand, two hundred eighty-one".