20440344034 has 16 divisors (see below), whose sum is σ = 34225693920. Its totient is φ = 9074993760.

The previous prime is 20440344017. The next prime is 20440344059. The reversal of 20440344034 is 43044304402.

It is a junction number, because it is equal to n+sod(n) for n = 20440343993 and 20440344011.

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 7 ways as a sum of consecutive naturals, for example, 10802619 + ... + 10804510.

It is an arithmetic number, because the mean of its divisors is an integer number (2139105870).

Almost surely, 2^20440344034 is an apocalyptic number.

20440344034 is a deficient number, since it is larger than the sum of its proper divisors (13785349886).

20440344034 is a wasteful number, since it uses less digits than its factorization.

20440344034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21607185.

The product of its (nonzero) digits is 18432, while the sum is 28.

Adding to 20440344034 its reverse (43044304402), we get a palindrome (63484648436).

The spelling of 20440344034 in words is "twenty billion, four hundred forty million, three hundred forty-four thousand, thirty-four".