8815408857 has 36 divisors (see below), whose sum is σ = 13066697644. Its totient is φ = 5726747520.

The previous prime is 8815408829. The next prime is 8815408907. The reversal of 8815408857 is 7588045188.

8815408857 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 394777161 + 8420631696 = 19869^2 + 91764^2 .

It is not a de Polignac number, because 8815408857 - 2¹⁸ = 8815146713 is a prime.

It is a super-2 number, since 2×8815408857² (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 (8815408057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 3968007 + ... + 3970227.

Almost surely, 2^8815408857 is an apocalyptic number.

It is an amenable number.

8815408857 is a deficient number, since it is larger than the sum of its proper divisors (4251288787).

8815408857 is a wasteful number, since it uses less digits than its factorization.

8815408857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2490 (or 2434 counting only the distinct ones).

The product of its (nonzero) digits is 2867200, while the sum is 54.

The square root of 8815408857 is about 93890.4087593616. The cubic root of 8815408857 is about 2065.7645477095.

The spelling of 8815408857 in words is "eight billion, eight hundred fifteen million, four hundred eight thousand, eight hundred fifty-seven".