20440354024 has 16 divisors (see below), whose sum is σ = 38337998400. Its totient is φ = 10216887792.

The previous prime is 20440354013. The next prime is 20440354049. The reversal of 20440354024 is 42045304402.

It is a junction number, because it is equal to n+sod(n) for n = 20440353983 and 20440354001.

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, 384642 + ... + 434545.

It is an arithmetic number, because the mean of its divisors is an integer number (2396124900).

Almost surely, 2^20440354024 is an apocalyptic number.

It is an amenable number.

20440354024 is a deficient number, since it is larger than the sum of its proper divisors (17897644376).

20440354024 is a wasteful number, since it uses less digits than its factorization.

20440354024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 822312 (or 822308 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 28.

Adding to 20440354024 its reverse (42045304402), we get a palindrome (62485658426).

The spelling of 20440354024 in words is "twenty billion, four hundred forty million, three hundred fifty-four thousand, twenty-four".