204505233013 has 8 divisors (see below), whose sum is σ = 216578271960. Its totient is φ = 192437007360.

The previous prime is 204505233011. The next prime is 204505233083. The reversal of 204505233013 is 310332505402.

It can be written as a sum of positive squares in 4 ways, for example, as 31863321009 + 172641912004 = 178503^2 + 415502^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 204505233013 - 2¹ = 204505233011 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 (204505233011) 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, 1115658 + ... + 1285963.

It is an arithmetic number, because the mean of its divisors is an integer number (27072283995).

Almost surely, 2^204505233013 is an apocalyptic number.

It is an amenable number.

204505233013 is a deficient number, since it is larger than the sum of its proper divisors (12073038947).

204505233013 is a wasteful number, since it uses less digits than its factorization.

204505233013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2406647.

The product of its (nonzero) digits is 10800, while the sum is 28.

Adding to 204505233013 its reverse (310332505402), we get a palindrome (514837738415).

The spelling of 204505233013 in words is "two hundred four billion, five hundred five million, two hundred thirty-three thousand, thirteen".