28093390771 has 2 divisors, whose sum is σ = 28093390772. Its totient is φ = 28093390770.

The previous prime is 28093390769. The next prime is 28093390807. The reversal of 28093390771 is 17709339082.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28093390771 - 2¹ = 28093390769 is a prime.

Together with 28093390769, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (28093390571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14046695385 + 14046695386.

It is an arithmetic number, because the mean of its divisors is an integer number (14046695386).

Almost surely, 2^28093390771 is an apocalyptic number.

28093390771 is a deficient number, since it is larger than the sum of its proper divisors (1).

28093390771 is an equidigital number, since it uses as much as digits as its factorization.

28093390771 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 571536, while the sum is 49.

The spelling of 28093390771 in words is "twenty-eight billion, ninety-three million, three hundred ninety thousand, seven hundred seventy-one".