20044041305 has 4 divisors (see below), whose sum is σ = 24052849572. Its totient is φ = 16035233040.

The previous prime is 20044041299. The next prime is 20044041307. The reversal of 20044041305 is 50314044002.

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 13103151961 + 6940889344 = 114469^2 + 83312^2 .

It is not a de Polignac number, because 20044041305 - 2²² = 20039847001 is a prime.

It is a super-2 number, since 2×20044041305² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20044041307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2004404126 + ... + 2004404135.

It is an arithmetic number, because the mean of its divisors is an integer number (6013212393).

Almost surely, 2^20044041305 is an apocalyptic number.

It is an amenable number.

20044041305 is a deficient number, since it is larger than the sum of its proper divisors (4008808267).

20044041305 is an equidigital number, since it uses as much as digits as its factorization.

20044041305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4008808266.

The product of its (nonzero) digits is 1920, while the sum is 23.

Adding to 20044041305 its reverse (50314044002), we get a palindrome (70358085307).

The spelling of 20044041305 in words is "twenty billion, forty-four million, forty-one thousand, three hundred five".