8824128561 has 12 divisors (see below), whose sum is σ = 13416803920. Its totient is φ = 5573133720.

The previous prime is 8824128499. The next prime is 8824128583. The reversal of 8824128561 is 1658214288.

8824128561 is a `hidden beast` number, since 8 + 82 + 4 + 1 + 2 + 8 + 561 = 666.

It is not a de Polignac number, because 8824128561 - 2¹¹ = 8824126513 is a prime.

It is a super-2 number, since 2×8824128561² (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 (8824128161) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25801375 + ... + 25801716.

Almost surely, 2^8824128561 is an apocalyptic number.

It is an amenable number.

8824128561 is a deficient number, since it is larger than the sum of its proper divisors (4592675359).

8824128561 is a wasteful number, since it uses less digits than its factorization.

8824128561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51603116 (or 51603113 counting only the distinct ones).

The product of its digits is 245760, while the sum is 45.

The square root of 8824128561 is about 93936.8328239781. The cubic root of 8824128561 is about 2066.4454357562.

The spelling of 8824128561 in words is "eight billion, eight hundred twenty-four million, one hundred twenty-eight thousand, five hundred sixty-one".