20440203026 has 4 divisors (see below), whose sum is σ = 30660304542. Its totient is φ = 10220101512.

The previous prime is 20440202999. The next prime is 20440203029. The reversal of 20440203026 is 62030204402.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 20213730625 + 226472401 = 142175^2 + 15049^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20440202992 and 20440203010.

It is not an unprimeable number, because it can be changed into a prime (20440203029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5110050755 + ... + 5110050758.

Almost surely, 2^20440203026 is an apocalyptic number.

20440203026 is a deficient number, since it is larger than the sum of its proper divisors (10220101516).

20440203026 is a wasteful number, since it uses less digits than its factorization.

20440203026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10220101515.

The product of its (nonzero) digits is 2304, while the sum is 23.

Adding to 20440203026 its reverse (62030204402), we get a palindrome (82470407428).

The spelling of 20440203026 in words is "twenty billion, four hundred forty million, two hundred three thousand, twenty-six".