8116859563 has 4 divisors (see below), whose sum is σ = 8121893328. Its totient is φ = 8111825800.

The previous prime is 8116859537. The next prime is 8116859567. The reversal of 8116859563 is 3659586118.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8116859563 is a prime.

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 8116859563.

It is not an unprimeable number, because it can be changed into a prime (8116859567) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2514463 + ... + 2517688.

It is an arithmetic number, because the mean of its divisors is an integer number (2030473332).

Almost surely, 2^8116859563 is an apocalyptic number.

8116859563 is a deficient number, since it is larger than the sum of its proper divisors (5033765).

8116859563 is a wasteful number, since it uses less digits than its factorization.

8116859563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5033764.

The product of its digits is 1555200, while the sum is 52.

The square root of 8116859563 is about 90093.6155507148. The cubic root of 8116859563 is about 2009.6912607980.

The spelling of 8116859563 in words is "eight billion, one hundred sixteen million, eight hundred fifty-nine thousand, five hundred sixty-three".