20004202445 has 8 divisors (see below), whose sum is σ = 24398568600. Its totient is φ = 15741011520.

The previous prime is 20004202423. The next prime is 20004202451. The reversal of 20004202445 is 54420240002.

It can be written as a sum of positive squares in 4 ways, for example, as 2175009769 + 17829192676 = 46637^2 + 133526^2 .

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

It is not a de Polignac number, because 20004202445 - 2⁸ = 20004202189 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20004202445.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32793470 + ... + 32794079.

It is an arithmetic number, because the mean of its divisors is an integer number (3049821075).

Almost surely, 2^20004202445 is an apocalyptic number.

It is an amenable number.

20004202445 is a deficient number, since it is larger than the sum of its proper divisors (4394366155).

20004202445 is an equidigital number, since it uses as much as digits as its factorization.

20004202445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65587615.

The product of its (nonzero) digits is 2560, while the sum is 23.

Adding to 20004202445 its reverse (54420240002), we get a palindrome (74424442447).

The spelling of 20004202445 in words is "twenty billion, four million, two hundred two thousand, four hundred forty-five".