8113681785 has 16 divisors (see below), whose sum is σ = 14162063040. Its totient is φ = 3933906240.

The previous prime is 8113681721. The next prime is 8113681813. The reversal of 8113681785 is 5871863118.

It is not a de Polignac number, because 8113681785 - 2⁶ = 8113681721 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24586750 + ... + 24587079.

It is an arithmetic number, because the mean of its divisors is an integer number (885128940).

Almost surely, 2^8113681785 is an apocalyptic number.

It is an amenable number.

8113681785 is a deficient number, since it is larger than the sum of its proper divisors (6048381255).

8113681785 is a wasteful number, since it uses less digits than its factorization.

8113681785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49173848.

The product of its digits is 322560, while the sum is 48.

The square root of 8113681785 is about 90075.9778464825. The cubic root of 8113681785 is about 2009.4289595869.

The spelling of 8113681785 in words is "eight billion, one hundred thirteen million, six hundred eighty-one thousand, seven hundred eighty-five".