20533145203 has 8 divisors (see below), whose sum is σ = 20581338096. Its totient is φ = 20484979200.

The previous prime is 20533145177. The next prime is 20533145219. The reversal of 20533145203 is 30254133502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20533145203 - 2³³ = 11943210611 is a prime.

It is a super-2 number, since 2×20533145203² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20533140203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2998063 + ... + 3004903.

It is an arithmetic number, because the mean of its divisors is an integer number (2572667262).

Almost surely, 2^20533145203 is an apocalyptic number.

20533145203 is a deficient number, since it is larger than the sum of its proper divisors (48192893).

20533145203 is an equidigital number, since it uses as much as digits as its factorization.

20533145203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13445.

The product of its (nonzero) digits is 10800, while the sum is 28.

Adding to 20533145203 its reverse (30254133502), we get a palindrome (50787278705).

The spelling of 20533145203 in words is "twenty billion, five hundred thirty-three million, one hundred forty-five thousand, two hundred three".