8505365613 has 4 divisors (see below), whose sum is σ = 11340487488. Its totient is φ = 5670243740.

The previous prime is 8505365587. The next prime is 8505365621. The reversal of 8505365613 is 3165635058.

It is a happy number.

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 8505365613 - 2⁸ = 8505365357 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8505365683) 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, 1417560933 + ... + 1417560938.

It is an arithmetic number, because the mean of its divisors is an integer number (2835121872).

Almost surely, 2^8505365613 is an apocalyptic number.

It is an amenable number.

8505365613 is a deficient number, since it is larger than the sum of its proper divisors (2835121875).

8505365613 is a wasteful number, since it uses less digits than its factorization.

8505365613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2835121874.

The product of its (nonzero) digits is 324000, while the sum is 42.

The square root of 8505365613 is about 92224.5391042970. The cubic root of 8505365613 is about 2041.2568838029.

The spelling of 8505365613 in words is "eight billion, five hundred five million, three hundred sixty-five thousand, six hundred thirteen".