8861085081 has 12 divisors (see below), whose sum is σ = 13472995120. Its totient is φ = 5596474680.

The previous prime is 8861085073. The next prime is 8861085089. The reversal of 8861085081 is 1805801688.

It is a happy number.

8861085081 is a `hidden beast` number, since 88 + 61 + 0 + 8 + 508 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (8861085073) and next prime (8861085089).

It is not a de Polignac number, because 8861085081 - 2³ = 8861085073 is a prime.

It is a super-2 number, since 2×8861085081² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (8861085089) 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, 25909435 + ... + 25909776.

Almost surely, 2^8861085081 is an apocalyptic number.

It is an amenable number.

8861085081 is a deficient number, since it is larger than the sum of its proper divisors (4611910039).

8861085081 is a wasteful number, since it uses less digits than its factorization.

8861085081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51819236 (or 51819233 counting only the distinct ones).

The product of its (nonzero) digits is 122880, while the sum is 45.

The square root of 8861085081 is about 94133.3367144711. The cubic root of 8861085081 is about 2069.3262590663.

The spelling of 8861085081 in words is "eight billion, eight hundred sixty-one million, eighty-five thousand, eighty-one".