20235435345 has 24 divisors (see below), whose sum is σ = 35422037352. Its totient is φ = 10685376000.

The previous prime is 20235435343. The next prime is 20235435391. The reversal of 20235435345 is 54353453202.

20235435345 is a `hidden beast` number, since 2 + 0 + 23 + 543 + 53 + 45 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 5262486849 + 14972948496 = 72543^2 + 122364^2 .

It is not a de Polignac number, because 20235435345 - 2¹ = 20235435343 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20235435343) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2221576 + ... + 2230665.

It is an arithmetic number, because the mean of its divisors is an integer number (1475918223).

Almost surely, 2^20235435345 is an apocalyptic number.

It is an amenable number.

20235435345 is a deficient number, since it is larger than the sum of its proper divisors (15186602007).

20235435345 is a wasteful number, since it uses less digits than its factorization.

20235435345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4452353 (or 4452350 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 36.

Adding to 20235435345 its reverse (54353453202), we get a palindrome (74588888547).

The spelling of 20235435345 in words is "twenty billion, two hundred thirty-five million, four hundred thirty-five thousand, three hundred forty-five".