28208808853 has 2 divisors, whose sum is σ = 28208808854. Its totient is φ = 28208808852.

The previous prime is 28208808721. The next prime is 28208808931. The reversal of 28208808853 is 35880880282.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28162881124 + 45927729 = 167818^2 + 6777^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28208808853 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28208808853.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28208808553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14104404426 + 14104404427.

It is an arithmetic number, because the mean of its divisors is an integer number (14104404427).

Almost surely, 2^28208808853 is an apocalyptic number.

It is an amenable number.

28208808853 is a deficient number, since it is larger than the sum of its proper divisors (1).

28208808853 is an equidigital number, since it uses as much as digits as its factorization.

28208808853 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1966080, while the sum is 52.

The spelling of 28208808853 in words is "twenty-eight billion, two hundred eight million, eight hundred eight thousand, eight hundred fifty-three".