20235243105 has 216 divisors, whose sum is σ = 46996282944. Its totient is φ = 7963401600.

The previous prime is 20235243101. The next prime is 20235243109. The reversal of 20235243105 is 50134253202.

It is a happy number.

20235243105 is a `hidden beast` number, since 202 + 352 + 4 + 3 + 105 = 666.

It is an interprime number because it is at equal distance from previous prime (20235243101) and next prime (20235243109).

It is not a de Polignac number, because 20235243105 - 2² = 20235243101 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20235243101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 215 ways as a sum of consecutive naturals, for example, 8754900 + ... + 8757210.

It is an arithmetic number, because the mean of its divisors is an integer number (217575384).

Almost surely, 2^20235243105 is an apocalyptic number.

It is an amenable number.

20235243105 is an abundant number, since it is smaller than the sum of its proper divisors (26761039839).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20235243105 is a wasteful number, since it uses less digits than its factorization.

20235243105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2385 (or 2356 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

Adding to 20235243105 its reverse (50134253202), we get a palindrome (70369496307).

The spelling of 20235243105 in words is "twenty billion, two hundred thirty-five million, two hundred forty-three thousand, one hundred five".