204444022013 has 16 divisors (see below), whose sum is σ = 255038495616. Its totient is φ = 159215000640.

The previous prime is 204444021949. The next prime is 204444022051. The reversal of 204444022013 is 310220444402.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 204444022013 - 2⁶ = 204444021949 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 (204444022073) 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, 632606 + ... + 899487.

It is an arithmetic number, because the mean of its divisors is an integer number (15939905976).

Almost surely, 2^204444022013 is an apocalyptic number.

It is an amenable number.

204444022013 is a deficient number, since it is larger than the sum of its proper divisors (50594473603).

204444022013 is a wasteful number, since it uses less digits than its factorization.

204444022013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1533844.

The product of its (nonzero) digits is 6144, while the sum is 26.

Adding to 204444022013 its reverse (310220444402), we get a palindrome (514664466415).

The spelling of 204444022013 in words is "two hundred four billion, four hundred forty-four million, twenty-two thousand, thirteen".