20440110440 has 16 divisors (see below), whose sum is σ = 45990248580. Its totient is φ = 8176044160.

The previous prime is 20440110407. The next prime is 20440110461. The reversal of 20440110440 is 4401104402.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 20432415364 + 7695076 = 142942^2 + 2774^2 .

It is a super-2 number, since 2×20440110440² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 255501341 + ... + 255501420.

Almost surely, 2^20440110440 is an apocalyptic number.

20440110440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20440110440 is an abundant number, since it is smaller than the sum of its proper divisors (25550138140).

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

20440110440 is a wasteful number, since it uses less digits than its factorization.

20440110440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 511002772 (or 511002768 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 20440110440 its reverse (4401104402), we get a palindrome (24841214842).

The spelling of 20440110440 in words is "twenty billion, four hundred forty million, one hundred ten thousand, four hundred forty".