204140013013 has 4 divisors (see below), whose sum is σ = 209657310700. Its totient is φ = 198622715328.

The previous prime is 204140012981. The next prime is 204140013017. The reversal of 204140013013 is 310310041402.

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

It can be written as a sum of positive squares in 2 ways, for example, as 176448723364 + 27691289649 = 420058^2 + 166407^2 .

It is a cyclic number.

It is not a de Polignac number, because 204140013013 - 2⁵ = 204140012981 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 (204140013017) 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, 2758648788 + ... + 2758648861.

It is an arithmetic number, because the mean of its divisors is an integer number (52414327675).

Almost surely, 2^204140013013 is an apocalyptic number.

It is an amenable number.

204140013013 is a deficient number, since it is larger than the sum of its proper divisors (5517297687).

204140013013 is an equidigital number, since it uses as much as digits as its factorization.

204140013013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5517297686.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 204140013013 its reverse (310310041402), we get a palindrome (514450054415).

The spelling of 204140013013 in words is "two hundred four billion, one hundred forty million, thirteen thousand, thirteen".