8126665085 has 32 divisors (see below), whose sum is σ = 12798259200. Its totient is φ = 4799338560.

The previous prime is 8126665069. The next prime is 8126665093. The reversal of 8126665085 is 5805666218.

It is a happy number.

It is not a de Polignac number, because 8126665085 - 2⁴ = 8126665069 is a prime.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 548165 + ... + 562794.

It is an arithmetic number, because the mean of its divisors is an integer number (399945600).

Almost surely, 2^8126665085 is an apocalyptic number.

It is an amenable number.

8126665085 is a deficient number, since it is larger than the sum of its proper divisors (4671594115).

8126665085 is a wasteful number, since it uses less digits than its factorization.

8126665085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1111001.

The product of its (nonzero) digits is 691200, while the sum is 47.

The square root of 8126665085 is about 90148.0176432072. The cubic root of 8126665085 is about 2010.5002001739.

The spelling of 8126665085 in words is "eight billion, one hundred twenty-six million, six hundred sixty-five thousand, eighty-five".