20301445243 has 4 divisors (see below), whose sum is σ = 20335225288. Its totient is φ = 20267665200.

The previous prime is 20301445187. The next prime is 20301445267. The reversal of 20301445243 is 34254410302.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20301445243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20311445243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16889121 + ... + 16890322.

It is an arithmetic number, because the mean of its divisors is an integer number (5083806322).

Almost surely, 2^20301445243 is an apocalyptic number.

20301445243 is a deficient number, since it is larger than the sum of its proper divisors (33780045).

20301445243 is an equidigital number, since it uses as much as digits as its factorization.

20301445243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33780044.

The product of its (nonzero) digits is 11520, while the sum is 28.

Adding to 20301445243 its reverse (34254410302), we get a palindrome (54555855545).

The spelling of 20301445243 in words is "twenty billion, three hundred one million, four hundred forty-five thousand, two hundred forty-three".