8538223563 has 12 divisors (see below), whose sum is σ = 12666314128. Its totient is φ = 5538306960.

The previous prime is 8538223559. The next prime is 8538223571. The reversal of 8538223563 is 3653228358.

8538223563 is a `hidden beast` number, since 8 + 5 + 3 + 82 + 2 + 3 + 563 = 666.

It is not a de Polignac number, because 8538223563 - 2² = 8538223559 is a prime.

It is a super-2 number, since 2×8538223563² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8538223523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12819823 + ... + 12820488.

Almost surely, 2^8538223563 is an apocalyptic number.

8538223563 is a deficient number, since it is larger than the sum of its proper divisors (4128090565).

8538223563 is a wasteful number, since it uses less digits than its factorization.

8538223563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25640354 (or 25640351 counting only the distinct ones).

The product of its digits is 1036800, while the sum is 45.

The square root of 8538223563 is about 92402.5084237436. The cubic root of 8538223563 is about 2043.8821023721.

The spelling of 8538223563 in words is "eight billion, five hundred thirty-eight million, two hundred twenty-three thousand, five hundred sixty-three".