20304562043 has 4 divisors (see below), whose sum is σ = 20326851168. Its totient is φ = 20282272920.

The previous prime is 20304562013. The next prime is 20304562079. The reversal of 20304562043 is 34026540302.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34026540302 = 2 ⋅17013270151.

It is a cyclic number.

It is not a de Polignac number, because 20304562043 - 2¹² = 20304557947 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20304561997 and 20304562015.

It is not an unprimeable number, because it can be changed into a prime (20304562013) 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, 11143196 + ... + 11145017.

It is an arithmetic number, because the mean of its divisors is an integer number (5081712792).

Almost surely, 2^20304562043 is an apocalyptic number.

20304562043 is a deficient number, since it is larger than the sum of its proper divisors (22289125).

20304562043 is an equidigital number, since it uses as much as digits as its factorization.

20304562043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22289124.

The product of its (nonzero) digits is 17280, while the sum is 29.

The spelling of 20304562043 in words is "twenty billion, three hundred four million, five hundred sixty-two thousand, forty-three".