28563065513 has 2 divisors, whose sum is σ = 28563065514. Its totient is φ = 28563065512.

The previous prime is 28563065471. The next prime is 28563065519. The reversal of 28563065513 is 31556036582.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24998139664 + 3564925849 = 158108^2 + 59707^2 .

It is a cyclic number.

It is not a de Polignac number, because 28563065513 - 2⁶ = 28563065449 is a prime.

It is a super-2 number, since 2×28563065513² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (28563065519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14281532756 + 14281532757.

It is an arithmetic number, because the mean of its divisors is an integer number (14281532757).

Almost surely, 2^28563065513 is an apocalyptic number.

It is an amenable number.

28563065513 is a deficient number, since it is larger than the sum of its proper divisors (1).

28563065513 is an equidigital number, since it uses as much as digits as its factorization.

28563065513 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648000, while the sum is 44.

The spelling of 28563065513 in words is "twenty-eight billion, five hundred sixty-three million, sixty-five thousand, five hundred thirteen".