201044442013 has 4 divisors (see below), whose sum is σ = 201110556348. Its totient is φ = 200978327680.

The previous prime is 201044441981. The next prime is 201044442029. The reversal of 201044442013 is 310244440102.

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 198321480889 + 2722961124 = 445333^2 + 52182^2 .

It is a cyclic number.

It is not a de Polignac number, because 201044442013 - 2⁵ = 201044441981 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 (201044442413) 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, 33052606 + ... + 33058687.

It is an arithmetic number, because the mean of its divisors is an integer number (50277639087).

Almost surely, 2^201044442013 is an apocalyptic number.

It is an amenable number.

201044442013 is a deficient number, since it is larger than the sum of its proper divisors (66114335).

201044442013 is an equidigital number, since it uses as much as digits as its factorization.

201044442013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66114334.

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 201044442013 its reverse (310244440102), we get a palindrome (511288882115).

The spelling of 201044442013 in words is "two hundred one billion, forty-four million, four hundred forty-two thousand, thirteen".