28216424113 has 2 divisors, whose sum is σ = 28216424114. Its totient is φ = 28216424112.

The previous prime is 28216424057. The next prime is 28216424129. The reversal of 28216424113 is 31142461282.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26251452529 + 1964971584 = 162023^2 + 44328^2 .

It is a cyclic number.

It is not a de Polignac number, because 28216424113 - 2¹³ = 28216415921 is a prime.

It is not a weakly prime, because it can be changed into another prime (28216424413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14108212056 + 14108212057.

It is an arithmetic number, because the mean of its divisors is an integer number (14108212057).

Almost surely, 2^28216424113 is an apocalyptic number.

It is an amenable number.

28216424113 is a deficient number, since it is larger than the sum of its proper divisors (1).

28216424113 is an equidigital number, since it uses as much as digits as its factorization.

28216424113 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18432, while the sum is 34.

Adding to 28216424113 its reverse (31142461282), we get a palindrome (59358885395).

The spelling of 28216424113 in words is "twenty-eight billion, two hundred sixteen million, four hundred twenty-four thousand, one hundred thirteen".