20320242445 has 4 divisors (see below), whose sum is σ = 24384290940. Its totient is φ = 16256193952.

The previous prime is 20320242433. The next prime is 20320242457. The reversal of 20320242445 is 54424202302.

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

It is an interprime number because it is at equal distance from previous prime (20320242433) and next prime (20320242457).

It can be written as a sum of positive squares in 2 ways, for example, as 2638157769 + 17682084676 = 51363^2 + 132974^2 .

It is a cyclic number.

It is not a de Polignac number, because 20320242445 - 2⁵ = 20320242413 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2032024240 + ... + 2032024249.

It is an arithmetic number, because the mean of its divisors is an integer number (6096072735).

Almost surely, 2^20320242445 is an apocalyptic number.

It is an amenable number.

20320242445 is a deficient number, since it is larger than the sum of its proper divisors (4064048495).

20320242445 is an equidigital number, since it uses as much as digits as its factorization.

20320242445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4064048494.

The product of its (nonzero) digits is 15360, while the sum is 28.

Adding to 20320242445 its reverse (54424202302), we get a palindrome (74744444747).

The spelling of 20320242445 in words is "twenty billion, three hundred twenty million, two hundred forty-two thousand, four hundred forty-five".