11280457889 has 2 divisors, whose sum is σ = 11280457890. Its totient is φ = 11280457888.

The previous prime is 11280457883. The next prime is 11280457891. The reversal of 11280457889 is 98875408211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7080381025 + 4200076864 = 84145^2 + 64808^2 .

It is a cyclic number.

It is not a de Polignac number, because 11280457889 - 2²⁰ = 11279409313 is a prime.

Together with 11280457891, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11280457889.

It is not a weakly prime, because it can be changed into another prime (11280457883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5640228944 + 5640228945.

It is an arithmetic number, because the mean of its divisors is an integer number (5640228945).

Almost surely, 2^11280457889 is an apocalyptic number.

It is an amenable number.

11280457889 is a deficient number, since it is larger than the sum of its proper divisors (1).

11280457889 is an equidigital number, since it uses as much as digits as its factorization.

11280457889 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1290240, while the sum is 53.

The spelling of 11280457889 in words is "eleven billion, two hundred eighty million, four hundred fifty-seven thousand, eight hundred eighty-nine".