8505196811 has 4 divisors (see below), whose sum is σ = 8505386400. Its totient is φ = 8505007224.

The previous prime is 8505196757. The next prime is 8505196813. The reversal of 8505196811 is 1186915058.

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-8505196811 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8505196813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14510 + ... + 131228.

It is an arithmetic number, because the mean of its divisors is an integer number (2126346600).

Almost surely, 2^8505196811 is an apocalyptic number.

8505196811 is a deficient number, since it is larger than the sum of its proper divisors (189589).

8505196811 is a wasteful number, since it uses less digits than its factorization.

8505196811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189588.

The product of its (nonzero) digits is 86400, while the sum is 44.

The square root of 8505196811 is about 92223.6239311815. The cubic root of 8505196811 is about 2041.2433797577.

The spelling of 8505196811 in words is "eight billion, five hundred five million, one hundred ninety-six thousand, eight hundred eleven".