8087108581 has 4 divisors (see below), whose sum is σ = 8129010892. Its totient is φ = 8045206272.

The previous prime is 8087108503. The next prime is 8087108597. The reversal of 8087108581 is 1858017808.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3603600900 + 4483507681 = 60030^2 + 66959^2 .

It is a cyclic number.

It is not a de Polignac number, because 8087108581 - 2⁹ = 8087108069 is a prime.

It is a super-2 number, since 2×8087108581² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8087108501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20950866 + ... + 20951251.

It is an arithmetic number, because the mean of its divisors is an integer number (2032252723).

Almost surely, 2^8087108581 is an apocalyptic number.

It is an amenable number.

8087108581 is a deficient number, since it is larger than the sum of its proper divisors (41902311).

8087108581 is a wasteful number, since it uses less digits than its factorization.

8087108581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41902310.

The product of its (nonzero) digits is 143360, while the sum is 46.

The square root of 8087108581 is about 89928.3524868548. The cubic root of 8087108581 is about 2007.2328597547.

The spelling of 8087108581 in words is "eight billion, eighty-seven million, one hundred eight thousand, five hundred eighty-one".