20205322345 has 32 divisors (see below), whose sum is σ = 26239020192. Its totient is φ = 14848192512.

The previous prime is 20205322327. The next prime is 20205322367. The reversal of 20205322345 is 54322350202.

It is a happy number.

It can be written as a sum of positive squares in 16 ways, for example, as 7285817449 + 12919504896 = 85357^2 + 113664^2 .

It is a cyclic number.

It is not a de Polignac number, because 20205322345 - 2¹¹ = 20205320297 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20680497 + ... + 20681473.

It is an arithmetic number, because the mean of its divisors is an integer number (819969381).

Almost surely, 2^20205322345 is an apocalyptic number.

It is an amenable number.

20205322345 is a deficient number, since it is larger than the sum of its proper divisors (6033697847).

20205322345 is a wasteful number, since it uses less digits than its factorization.

20205322345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2221.

The product of its (nonzero) digits is 14400, while the sum is 28.

Adding to 20205322345 its reverse (54322350202), we get a palindrome (74527672547).

The spelling of 20205322345 in words is "twenty billion, two hundred five million, three hundred twenty-two thousand, three hundred forty-five".