20543233443 has 8 divisors (see below), whose sum is σ = 27479053056. Its totient is φ = 13651451400.

The previous prime is 20543233421. The next prime is 20543233463. The reversal of 20543233443 is 34433234502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20543233443 - 2¹⁰ = 20543232419 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (20543233463) 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, 11008303 + ... + 11010168.

It is an arithmetic number, because the mean of its divisors is an integer number (3434881632).

Almost surely, 2^20543233443 is an apocalyptic number.

20543233443 is a deficient number, since it is larger than the sum of its proper divisors (6935819613).

20543233443 is a wasteful number, since it uses less digits than its factorization.

20543233443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22018785.

The product of its (nonzero) digits is 103680, while the sum is 33.

Adding to 20543233443 its reverse (34433234502), we get a palindrome (54976467945).

The spelling of 20543233443 in words is "twenty billion, five hundred forty-three million, two hundred thirty-three thousand, four hundred forty-three".