20304201345 has 16 divisors (see below), whose sum is σ = 34397706240. Its totient is φ = 10191912704.

The previous prime is 20304201319. The next prime is 20304201377. The reversal of 20304201345 is 54310240302.

It is a cyclic number.

It is not a de Polignac number, because 20304201345 - 2¹⁶ = 20304135809 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39811905 + ... + 39812414.

It is an arithmetic number, because the mean of its divisors is an integer number (2149856640).

Almost surely, 2^20304201345 is an apocalyptic number.

It is an amenable number.

20304201345 is a deficient number, since it is larger than the sum of its proper divisors (14093504895).

20304201345 is a wasteful number, since it uses less digits than its factorization.

20304201345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79624344.

The product of its (nonzero) digits is 2880, while the sum is 24.

Adding to 20304201345 its reverse (54310240302), we get a palindrome (74614441647).

The spelling of 20304201345 in words is "twenty billion, three hundred four million, two hundred one thousand, three hundred forty-five".