20404200433 has 4 divisors (see below), whose sum is σ = 20405391220. Its totient is φ = 20403009648.

The previous prime is 20404200413. The next prime is 20404200457. The reversal of 20404200433 is 33400240402.

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

It can be written as a sum of positive squares in 2 ways, for example, as 11607261169 + 8796939264 = 107737^2 + 93792^2 .

It is a cyclic number.

It is not a de Polignac number, because 20404200433 - 2¹³ = 20404192241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20404200413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 569310 + ... + 604087.

It is an arithmetic number, because the mean of its divisors is an integer number (5101347805).

Almost surely, 2^20404200433 is an apocalyptic number.

It is an amenable number.

20404200433 is a deficient number, since it is larger than the sum of its proper divisors (1190787).

20404200433 is a wasteful number, since it uses less digits than its factorization.

20404200433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1190786.

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

Adding to 20404200433 its reverse (33400240402), we get a palindrome (53804440835).

The spelling of 20404200433 in words is "twenty billion, four hundred four million, two hundred thousand, four hundred thirty-three".