20433440002 has 4 divisors (see below), whose sum is σ = 30650160006. Its totient is φ = 10216720000.

The previous prime is 20433439993. The next prime is 20433440017. The reversal of 20433440002 is 20004433402.

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., 18052878321 + 2380561681 = 134361^2 + 48791^2 .

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5108359999 + ... + 5108360002.

Almost surely, 2^20433440002 is an apocalyptic number.

20433440002 is a deficient number, since it is larger than the sum of its proper divisors (10216720004).

20433440002 is a wasteful number, since it uses less digits than its factorization.

20433440002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10216720003.

The product of its (nonzero) digits is 2304, while the sum is 22.

Adding to 20433440002 its reverse (20004433402), we get a palindrome (40437873404).

The spelling of 20433440002 in words is "twenty billion, four hundred thirty-three million, four hundred forty thousand, two".