20440144344 has 64 divisors (see below), whose sum is σ = 56458736640. Its totient is φ = 6133783040.

The previous prime is 20440144337. The next prime is 20440144369. The reversal of 20440144344 is 44344104402.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1079712 + ... + 1098479.

It is an arithmetic number, because the mean of its divisors is an integer number (882167760).

Almost surely, 2^20440144344 is an apocalyptic number.

20440144344 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20440144344 is an abundant number, since it is smaller than the sum of its proper divisors (36018592296).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20440144344 is a wasteful number, since it uses less digits than its factorization.

20440144344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2178240 (or 2178236 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 30.

Adding to 20440144344 its reverse (44344104402), we get a palindrome (64784248746).

The spelling of 20440144344 in words is "twenty billion, four hundred forty million, one hundred forty-four thousand, three hundred forty-four".