8505364321 has 4 divisors (see below), whose sum is σ = 8779730944. Its totient is φ = 8230997700.

The previous prime is 8505364313. The next prime is 8505364331. The reversal of 8505364321 is 1234635058.

8505364321 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1234635058 = 2 ⋅617317529.

It is a cyclic number.

It is not a de Polignac number, because 8505364321 - 2³ = 8505364313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8505364331) 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, 137183265 + ... + 137183326.

It is an arithmetic number, because the mean of its divisors is an integer number (2194932736).

Almost surely, 2^8505364321 is an apocalyptic number.

It is an amenable number.

8505364321 is a deficient number, since it is larger than the sum of its proper divisors (274366623).

8505364321 is a wasteful number, since it uses less digits than its factorization.

8505364321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274366622.

The product of its (nonzero) digits is 86400, while the sum is 37.

The square root of 8505364321 is about 92224.5320996534. The cubic root of 8505364321 is about 2041.2567804444.

Adding to 8505364321 its reverse (1234635058), we get a palindrome (9739999379).

The spelling of 8505364321 in words is "eight billion, five hundred five million, three hundred sixty-four thousand, three hundred twenty-one".