204202510543 has 4 divisors (see below), whose sum is σ = 204204401608. Its totient is φ = 204200619480.

The previous prime is 204202510541. The next prime is 204202510573. The reversal of 204202510543 is 345015202402.

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

It is a cyclic number.

It is not a de Polignac number, because 204202510543 - 2¹ = 204202510541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204202510541) 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, 773073 + ... + 1003018.

It is an arithmetic number, because the mean of its divisors is an integer number (51051100402).

Almost surely, 2^204202510543 is an apocalyptic number.

204202510543 is a deficient number, since it is larger than the sum of its proper divisors (1891065).

204202510543 is a wasteful number, since it uses less digits than its factorization.

204202510543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1891064.

The product of its (nonzero) digits is 9600, while the sum is 28.

Adding to 204202510543 its reverse (345015202402), we get a palindrome (549217712945).

The spelling of 204202510543 in words is "two hundred four billion, two hundred two million, five hundred ten thousand, five hundred forty-three".