8136691765 has 16 divisors (see below), whose sum is σ = 10283627520. Its totient is φ = 6163335360.

The previous prime is 8136691709. The next prime is 8136691831. The reversal of 8136691765 is 5671966318.

It is a happy number.

It is not a de Polignac number, because 8136691765 - 2⁹ = 8136691253 is a prime.

It is a congruent number.

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, 155500 + ... + 201130.

It is an arithmetic number, because the mean of its divisors is an integer number (642726720).

Almost surely, 2^8136691765 is an apocalyptic number.

It is an amenable number.

8136691765 is a deficient number, since it is larger than the sum of its proper divisors (2146935755).

8136691765 is a wasteful number, since it uses less digits than its factorization.

8136691765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47532.

The product of its digits is 1632960, while the sum is 52.

The square root of 8136691765 is about 90203.6128156739. The cubic root of 8136691765 is about 2011.3267121168.

The spelling of 8136691765 in words is "eight billion, one hundred thirty-six million, six hundred ninety-one thousand, seven hundred sixty-five".