20444140445 has 16 divisors (see below), whose sum is σ = 24968571840. Its totient is φ = 16065350400.

The previous prime is 20444140441. The next prime is 20444140489. The reversal of 20444140445 is 54404144402.

It is not a de Polignac number, because 20444140445 - 2² = 20444140441 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20444140441) 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, 354005 + ... + 407685.

It is an arithmetic number, because the mean of its divisors is an integer number (1560535740).

Almost surely, 2^20444140445 is an apocalyptic number.

It is an amenable number.

20444140445 is a deficient number, since it is larger than the sum of its proper divisors (4524431395).

20444140445 is a wasteful number, since it uses less digits than its factorization.

20444140445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55036.

The product of its (nonzero) digits is 40960, while the sum is 32.

Adding to 20444140445 its reverse (54404144402), we get a palindrome (74848284847).

The spelling of 20444140445 in words is "twenty billion, four hundred forty-four million, one hundred forty thousand, four hundred forty-five".