28195267271 has 2 divisors, whose sum is σ = 28195267272. Its totient is φ = 28195267270.

The previous prime is 28195267267. The next prime is 28195267273. The reversal of 28195267271 is 17276259182.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28195267271 - 2² = 28195267267 is a prime.

Together with 28195267273, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28195267273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14097633635 + 14097633636.

It is an arithmetic number, because the mean of its divisors is an integer number (14097633636).

Almost surely, 2^28195267271 is an apocalyptic number.

28195267271 is a deficient number, since it is larger than the sum of its proper divisors (1).

28195267271 is an equidigital number, since it uses as much as digits as its factorization.

28195267271 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 846720, while the sum is 50.

The spelling of 28195267271 in words is "twenty-eight billion, one hundred ninety-five million, two hundred sixty-seven thousand, two hundred seventy-one".