20440113234 has 16 divisors (see below), whose sum is σ = 43284945888. Its totient is φ = 6412584512.

The previous prime is 20440113233. The next prime is 20440113277. The reversal of 20440113234 is 43231104402.

It is not an unprimeable number, because it can be changed into a prime (20440113233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100196532 + ... + 100196735.

It is an arithmetic number, because the mean of its divisors is an integer number (2705309118).

Almost surely, 2^20440113234 is an apocalyptic number.

20440113234 is an abundant number, since it is smaller than the sum of its proper divisors (22844832654).

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

20440113234 is a wasteful number, since it uses less digits than its factorization.

20440113234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200393289.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 20440113234 its reverse (43231104402), we get a palindrome (63671217636).

The spelling of 20440113234 in words is "twenty billion, four hundred forty million, one hundred thirteen thousand, two hundred thirty-four".