8165040505 has 8 divisors (see below), whose sum is σ = 9798576192. Its totient is φ = 6531680688.

The previous prime is 8165040491. The next prime is 8165040511. The reversal of 8165040505 is 5050405618.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8165040505 - 2¹¹ = 8165038457 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 102594 + ... + 163876.

It is an arithmetic number, because the mean of its divisors is an integer number (1224822024).

Almost surely, 2^8165040505 is an apocalyptic number.

It is an amenable number.

8165040505 is a deficient number, since it is larger than the sum of its proper divisors (1633535687).

8165040505 is a wasteful number, since it uses less digits than its factorization.

8165040505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87935.

The product of its (nonzero) digits is 24000, while the sum is 34.

The square root of 8165040505 is about 90360.6136820684. The cubic root of 8165040505 is about 2013.6598670312.

The spelling of 8165040505 in words is "eight billion, one hundred sixty-five million, forty thousand, five hundred five".