201044444013 has 72 divisors (see below), whose sum is σ = 368759183520. Its totient is φ = 108835967520.

The previous prime is 201044443979. The next prime is 201044444023. The reversal of 201044444013 is 310444440102.

201044444013 is a `hidden beast` number, since 201 + 0 + 4 + 4 + 4 + 440 + 13 = 666.

It is not a de Polignac number, because 201044444013 - 2²⁰ = 201043395437 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201044444023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 218098 + ... + 670563.

Almost surely, 2^201044444013 is an apocalyptic number.

It is an amenable number.

201044444013 is a deficient number, since it is larger than the sum of its proper divisors (167714739507).

201044444013 is an equidigital number, since it uses as much as digits as its factorization.

201044444013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 888709 (or 888690 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

Adding to 201044444013 its reverse (310444440102), we get a palindrome (511488884115).

The spelling of 201044444013 in words is "two hundred one billion, forty-four million, four hundred forty-four thousand, thirteen".