8540863817 has 4 divisors (see below), whose sum is σ = 8588578320. Its totient is φ = 8493149316.

The previous prime is 8540863811. The next prime is 8540863819. The reversal of 8540863817 is 7183680458.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8540863817 - 2⁸ = 8540863561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8540863811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23856983 + ... + 23857340.

It is an arithmetic number, because the mean of its divisors is an integer number (2147144580).

Almost surely, 2^8540863817 is an apocalyptic number.

It is an amenable number.

8540863817 is a deficient number, since it is larger than the sum of its proper divisors (47714503).

8540863817 is a wasteful number, since it uses less digits than its factorization.

8540863817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47714502.

The product of its (nonzero) digits is 1290240, while the sum is 50.

The square root of 8540863817 is about 92416.7940203511. The cubic root of 8540863817 is about 2044.0927555490.

The spelling of 8540863817 in words is "eight billion, five hundred forty million, eight hundred sixty-three thousand, eight hundred seventeen".