20043543012 has 24 divisors (see below), whose sum is σ = 47560951200. Its totient is φ = 6567940416.

The previous prime is 20043543007. The next prime is 20043543017. The reversal of 20043543012 is 21034534002.

It is an interprime number because it is at equal distance from previous prime (20043543007) and next prime (20043543017).

It is not an unprimeable number, because it can be changed into a prime (20043543017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14154337 + ... + 14155752.

It is an arithmetic number, because the mean of its divisors is an integer number (1981706300).

Almost surely, 2^20043543012 is an apocalyptic number.

It is an amenable number.

20043543012 is an abundant number, since it is smaller than the sum of its proper divisors (27517408188).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20043543012 is a wasteful number, since it uses less digits than its factorization.

20043543012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28310155 (or 28310153 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

The spelling of 20043543012 in words is "twenty billion, forty-three million, five hundred forty-three thousand, twelve".