28055834291 has 2 divisors, whose sum is σ = 28055834292. Its totient is φ = 28055834290.

The previous prime is 28055834251. The next prime is 28055834293. The reversal of 28055834291 is 19243855082.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28055834291 is a prime.

Together with 28055834293, 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 (28055834293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14027917145 + 14027917146.

It is an arithmetic number, because the mean of its divisors is an integer number (14027917146).

Almost surely, 2^28055834291 is an apocalyptic number.

28055834291 is a deficient number, since it is larger than the sum of its proper divisors (1).

28055834291 is an equidigital number, since it uses as much as digits as its factorization.

28055834291 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 691200, while the sum is 47.

The spelling of 28055834291 in words is "twenty-eight billion, fifty-five million, eight hundred thirty-four thousand, two hundred ninety-one".