20440420003 has 8 divisors (see below), whose sum is σ = 20613344768. Its totient is φ = 20267682624.

The previous prime is 20440419973. The next prime is 20440420009. The reversal of 20440420003 is 30002404402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20440420003 - 2³³ = 11850485411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20440420009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 176725 + ... + 268537.

It is an arithmetic number, because the mean of its divisors is an integer number (2576668096).

Almost surely, 2^20440420003 is an apocalyptic number.

20440420003 is a deficient number, since it is larger than the sum of its proper divisors (172924765).

20440420003 is a wasteful number, since it uses less digits than its factorization.

20440420003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93693.

The product of its (nonzero) digits is 768, while the sum is 19.

Adding to 20440420003 its reverse (30002404402), we get a palindrome (50442824405).

The spelling of 20440420003 in words is "twenty billion, four hundred forty million, four hundred twenty thousand, three".