8115640807 has 8 divisors (see below), whose sum is σ = 8399991600. Its totient is φ = 7831590144.

The previous prime is 8115640777. The next prime is 8115640831. The reversal of 8115640807 is 7080465118.

8115640807 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 8115640807 - 2⁷ = 8115640679 is a prime.

It is a super-2 number, since 2×8115640807² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8115640807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8115640837) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19293 + ... + 128854.

It is an arithmetic number, because the mean of its divisors is an integer number (1049998950).

Almost surely, 2^8115640807 is an apocalyptic number.

8115640807 is a deficient number, since it is larger than the sum of its proper divisors (284350793).

8115640807 is a wasteful number, since it uses less digits than its factorization.

8115640807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150065.

The product of its (nonzero) digits is 53760, while the sum is 40.

The square root of 8115640807 is about 90086.8514656828. The cubic root of 8115640807 is about 2009.5906699286.

The spelling of 8115640807 in words is "eight billion, one hundred fifteen million, six hundred forty thousand, eight hundred seven".