204203530345013 has 16 divisors (see below), whose sum is σ = 212630223818880. Its totient is φ = 195948804888000.

The previous prime is 204203530344949. The next prime is 204203530345027. The reversal of 204203530345013 is 310543035302402.

It is a cyclic number.

It is not a de Polignac number, because 204203530345013 - 2⁶ = 204203530344949 is a prime.

It is a super-2 number, since 2×204203530345013² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204203530395013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 130697378 + ... + 132250563.

It is an arithmetic number, because the mean of its divisors is an integer number (13289388988680).

Almost surely, 2^{204203530345013} is an apocalyptic number.

It is an amenable number.

204203530345013 is a deficient number, since it is larger than the sum of its proper divisors (8426693473867).

204203530345013 is a wasteful number, since it uses less digits than its factorization.

204203530345013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262948268.

The product of its (nonzero) digits is 129600, while the sum is 35.

Adding to 204203530345013 its reverse (310543035302402), we get a palindrome (514746565647415).

The spelling of 204203530345013 in words is "two hundred four trillion, two hundred three billion, five hundred thirty million, three hundred forty-five thousand, thirteen".