28343208853 has 2 divisors, whose sum is σ = 28343208854. Its totient is φ = 28343208852.

The previous prime is 28343208811. The next prime is 28343208967. The reversal of 28343208853 is 35880234382.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21980434564 + 6362774289 = 148258^2 + 79767^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28343208853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28343218853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14171604426 + 14171604427.

It is an arithmetic number, because the mean of its divisors is an integer number (14171604427).

Almost surely, 2^28343208853 is an apocalyptic number.

It is an amenable number.

28343208853 is a deficient number, since it is larger than the sum of its proper divisors (1).

28343208853 is an equidigital number, since it uses as much as digits as its factorization.

28343208853 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1105920, while the sum is 46.

The spelling of 28343208853 in words is "twenty-eight billion, three hundred forty-three million, two hundred eight thousand, eight hundred fifty-three".