8820281807109 has 60 divisors (see below), whose sum is σ = 13715277419844. Its totient is φ = 5648594773248.

The previous prime is 8820281807093. The next prime is 8820281807123. The reversal of 8820281807109 is 9017081820288.

It can be written as a sum of positive squares in 6 ways, for example, as 308458052100 + 8511823755009 = 555390^2 + 2917503^2 .

It is not a de Polignac number, because 8820281807109 - 2⁴ = 8820281807093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8820281807609) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 13091209 + ... + 13748465.

Almost surely, 2^{8820281807109} is an apocalyptic number.

It is an amenable number.

8820281807109 is a deficient number, since it is larger than the sum of its proper divisors (4894995612735).

8820281807109 is a wasteful number, since it uses less digits than its factorization.

8820281807109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 657524 (or 657486 counting only the distinct ones).

The product of its (nonzero) digits is 1032192, while the sum is 54.

The spelling of 8820281807109 in words is "eight trillion, eight hundred twenty billion, two hundred eighty-one million, eight hundred seven thousand, one hundred nine".