28805441191 has 2 divisors, whose sum is σ = 28805441192. Its totient is φ = 28805441190.

The previous prime is 28805441179. The next prime is 28805441209. The reversal of 28805441191 is 19114450882.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28805441191 - 2²¹ = 28803344039 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28805441101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14402720595 + 14402720596.

It is an arithmetic number, because the mean of its divisors is an integer number (14402720596).

Almost surely, 2^28805441191 is an apocalyptic number.

28805441191 is a deficient number, since it is larger than the sum of its proper divisors (1).

28805441191 is an equidigital number, since it uses as much as digits as its factorization.

28805441191 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 92160, while the sum is 43.

The spelling of 28805441191 in words is "twenty-eight billion, eight hundred five million, four hundred forty-one thousand, one hundred ninety-one".