20040445435 has 4 divisors (see below), whose sum is σ = 24048534528. Its totient is φ = 16032356344.

The previous prime is 20040445423. The next prime is 20040445471. The reversal of 20040445435 is 53454404002.

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

It is a cyclic number.

It is not a de Polignac number, because 20040445435 - 2²³ = 20032056827 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20040445397 and 20040445406.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2004044539 + ... + 2004044548.

It is an arithmetic number, because the mean of its divisors is an integer number (6012133632).

Almost surely, 2^20040445435 is an apocalyptic number.

20040445435 is a deficient number, since it is larger than the sum of its proper divisors (4008089093).

20040445435 is an equidigital number, since it uses as much as digits as its factorization.

20040445435 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4008089092.

The product of its (nonzero) digits is 38400, while the sum is 31.

Adding to 20040445435 its reverse (53454404002), we get a palindrome (73494849437).

The spelling of 20040445435 in words is "twenty billion, forty million, four hundred forty-five thousand, four hundred thirty-five".