20235203445 has 48 divisors (see below), whose sum is σ = 34427245248. Its totient is φ = 10147123200.

The previous prime is 20235203441. The next prime is 20235203453. The reversal of 20235203445 is 54430253202.

It is not a de Polignac number, because 20235203445 - 2² = 20235203441 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20235203441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6288477 + ... + 6291693.

It is an arithmetic number, because the mean of its divisors is an integer number (717234276).

Almost surely, 2^20235203445 is an apocalyptic number.

It is an amenable number.

20235203445 is a deficient number, since it is larger than the sum of its proper divisors (14192041803).

20235203445 is a wasteful number, since it uses less digits than its factorization.

20235203445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4710 (or 4693 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 30.

Adding to 20235203445 its reverse (54430253202), we get a palindrome (74665456647).

The spelling of 20235203445 in words is "twenty billion, two hundred thirty-five million, two hundred three thousand, four hundred forty-five".