823321470609 has 24 divisors (see below), whose sum is σ = 1297475865504. Its totient is φ = 498936240000.

The previous prime is 823321470607. The next prime is 823321470641. The reversal of 823321470609 is 906074123328.

823321470609 is a `hidden beast` number, since 8 + 2 + 3 + 32 + 1 + 4 + 7 + 0 + 609 = 666.

It is not a de Polignac number, because 823321470609 - 2¹ = 823321470607 is a prime.

It is not an unprimeable number, because it can be changed into a prime (823321470607) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 696409 + ... + 1460009.

It is an arithmetic number, because the mean of its divisors is an integer number (54061494396).

Almost surely, 2^823321470609 is an apocalyptic number.

It is an amenable number.

823321470609 is a deficient number, since it is larger than the sum of its proper divisors (474154394895).

823321470609 is a wasteful number, since it uses less digits than its factorization.

823321470609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 774509 (or 774506 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 45.

The spelling of 823321470609 in words is "eight hundred twenty-three billion, three hundred twenty-one million, four hundred seventy thousand, six hundred nine".