28563065653 has 2 divisors, whose sum is σ = 28563065654. Its totient is φ = 28563065652.

The previous prime is 28563065599. The next prime is 28563065669. The reversal of 28563065653 is 35656036582.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16573472644 + 11989593009 = 128738^2 + 109497^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28563065653 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28563065597 and 28563065606.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28563065053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14281532826 + 14281532827.

It is an arithmetic number, because the mean of its divisors is an integer number (14281532827).

Almost surely, 2^28563065653 is an apocalyptic number.

It is an amenable number.

28563065653 is a deficient number, since it is larger than the sum of its proper divisors (1).

28563065653 is an equidigital number, since it uses as much as digits as its factorization.

28563065653 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888000, while the sum is 49.

The spelling of 28563065653 in words is "twenty-eight billion, five hundred sixty-three million, sixty-five thousand, six hundred fifty-three".