204210534511 has 24 divisors (see below), whose sum is σ = 229200120720. Its totient is φ = 181286090496.

The previous prime is 204210534391. The next prime is 204210534553. The reversal of 204210534511 is 115435012402.

It is not a de Polignac number, because 204210534511 - 2¹⁹ = 204210010223 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 204210534511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204210534611) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1332720 + ... + 1478026.

It is an arithmetic number, because the mean of its divisors is an integer number (9550005030).

Almost surely, 2^204210534511 is an apocalyptic number.

204210534511 is a deficient number, since it is larger than the sum of its proper divisors (24989586209).

204210534511 is a wasteful number, since it uses less digits than its factorization.

204210534511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145591 (or 145572 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 28.

Adding to 204210534511 its reverse (115435012402), we get a palindrome (319645546913).

The spelling of 204210534511 in words is "two hundred four billion, two hundred ten million, five hundred thirty-four thousand, five hundred eleven".