10820804563 has 2 divisors, whose sum is σ = 10820804564. Its totient is φ = 10820804562.

The previous prime is 10820804543. The next prime is 10820804567. The reversal of 10820804563 is 36540802801.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 10820804563 - 2²¹ = 10818707411 is a prime.

It is a super-2 number, since 2×10820804563² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (10820804567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5410402281 + 5410402282.

It is an arithmetic number, because the mean of its divisors is an integer number (5410402282).

Almost surely, 2^10820804563 is an apocalyptic number.

10820804563 is a deficient number, since it is larger than the sum of its proper divisors (1).

10820804563 is an equidigital number, since it uses as much as digits as its factorization.

10820804563 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46080, while the sum is 37.

The spelling of 10820804563 in words is "ten billion, eight hundred twenty million, eight hundred four thousand, five hundred sixty-three".