20652304321 has 12 divisors (see below), whose sum is σ = 23228390416. Its totient is φ = 18338193720.

The previous prime is 20652304301. The next prime is 20652304333. The reversal of 20652304321 is 12340325602.

It is not a de Polignac number, because 20652304321 - 2¹³ = 20652296129 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20652304321.

It is not an unprimeable number, because it can be changed into a prime (20652304301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1979451 + ... + 1989856.

Almost surely, 2^20652304321 is an apocalyptic number.

It is an amenable number.

20652304321 is a deficient number, since it is larger than the sum of its proper divisors (2576086095).

20652304321 is a wasteful number, since it uses less digits than its factorization.

20652304321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3969372 (or 3969361 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 28.

Adding to 20652304321 its reverse (12340325602), we get a palindrome (32992629923).

The spelling of 20652304321 in words is "twenty billion, six hundred fifty-two million, three hundred four thousand, three hundred twenty-one".