20304054643 has 4 divisors (see below), whose sum is σ = 20362232800. Its totient is φ = 20245876488.

The previous prime is 20304054637. The next prime is 20304054649. The reversal of 20304054643 is 34645040302.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (20304054637) and next prime (20304054649).

It is a cyclic number.

It is not a de Polignac number, because 20304054643 - 2⁹ = 20304054131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20304054649) 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 3 ways as a sum of consecutive naturals, for example, 29088555 + ... + 29089252.

It is an arithmetic number, because the mean of its divisors is an integer number (5090558200).

Almost surely, 2^20304054643 is an apocalyptic number.

20304054643 is a deficient number, since it is larger than the sum of its proper divisors (58178157).

20304054643 is an equidigital number, since it uses as much as digits as its factorization.

20304054643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58178156.

The product of its (nonzero) digits is 34560, while the sum is 31.

Adding to 20304054643 its reverse (34645040302), we get a palindrome (54949094945).

The spelling of 20304054643 in words is "twenty billion, three hundred four million, fifty-four thousand, six hundred forty-three".